What is LessonUp
Search
Channels
AI tools
Beta
Log in
Register
‹
Return to search
Solving equations
Good morning!
Schedule:
Learning goals
Solving equations
Equations with a repeated variable
1 / 20
next
Slide 1:
Slide
Wiskunde
Middelbare school
vwo
Leerjaar 2
This lesson contains
20 slides
, with
text slides
.
Start lesson
Save
Share
Print lesson
Items in this lesson
Good morning!
Schedule:
Learning goals
Solving equations
Equations with a repeated variable
Slide 1 - Slide
Learning goals
At the end of this lesson I can:
Solve 2-step equations
Slide 2 - Slide
Why not trial and error?
Slide 3 - Slide
Starter
Solve the following equations for x:
a. 3(x - 4) = 39
b.
2
x
−
2
=
5
Slide 4 - Slide
Starter
Solve the following equations for x:
a. x = 17
b. x = 12
Slide 5 - Slide
What to do
Open this LessonUp on your device.
Work on the slides with the appropriate color:
-
Got all the questions right
I really want a challenge!
-
Got 1-2 questions right
I think a bit more practice will help me!
-
Got 0-1 question correct
I think more practice will help me! I would like some more help.
Slide 6 - Slide
Solving equations by backtracking
Step 1: Identify the operations in order
Step 2: Identify the inverse operations
Step 3: Apply inverse operations in REVERSE order
Example
2
x
−
2
=
5
Slide 7 - Slide
Solving equations by backtracking
Step 1: Identify the operations in order
Step 2: Identify the inverse operations
Step 3: Apply inverse operations in REVERSE order
Example
Step 1: Step 2:
-first 2 is subtracted from x
-then we divide by 2
Step 3:
2
x
−
2
=
5
Slide 8 - Slide
Solving equations by backtracking
Step 1: Identify the operations in order
Step 2: Identify the inverse operations
Step 3: Apply inverse operations in REVERSE order
Example
Step 1: Step 2:
-first 2 is subtracted from x -2 +2
-then we divide by 2 /2 ⋅2
Step 3:
2
x
−
2
=
5
Slide 9 - Slide
Solving equations
3(x - 4) = 39
1. Expand or simplify any brackets.
Slide 10 - Slide
Solving equations
3(x - 4) = 39
(3⋅x) + (3⋅ -4) = 39
1. Expand or simplify any brackets.
Slide 11 - Slide
Solving equations (1)
3(x - 4) = 39
(3⋅x) + (3⋅ -4) = 39
3x + (-12) = 39
3x -12 = 39
Are all variables (x) on the same side?
2. Collect like terms
Slide 12 - Slide
Solving equations
3(x - 4) = 39
(3⋅x) + (3⋅ -4) = 39
3x + (-12) = 39
3x
- 12
= 39
3x
-12
+ 12
= 39
+ 12
⋅ 3
x = 51
3
x
/3
= 51
/3
x = 17
3. Do Inverse operations on all terms on the side of x to
Isolate x
Slide 13 - Slide
Solving equations
3(x - 4) = 39
(3⋅x) + (3⋅ -4) = 39
3x + (-12) = 39
3x
- 12
= 39
3x
-12
+ 12
= 39
+ 12
3
x = 51
3
x
/3
= 51
/3
x = 17
Slide 14 - Slide
Solving equations by backtracking
3(x - 4) = 39
Step 1: Identify operations
Step 2: Identify inverse operations
Step 3: Apply inverse operations in
reverse
order
Slide 15 - Slide
Solving equations by backtracking
3(x - 4) = 39
3(x - 4)
/ 3
= 39
/ 3
x - 4 = 13
x - 4
+ 4
= 13
+ 4
x = 17
Step 1: Identify operations
Step 2: Identify inverse operations
Step 3: Apply inverse operations in
reverse
order
Slide 16 - Slide
Let's get to work!
p. 210-211: 10F 1adgj, 2be, 3abc, 5def
p. 211-212: 10F 3abcd, 4ac, 5adgj, 6cf
p. 211-212: 10F 5adgj, 6cf, 7adgjmps, 8def
Finished? Try the
next level
or pick up
circuit training worksheet
Slide 17 - Slide
Equations with variables on both sides
Slide 18 - Slide
Worksheet
Finish the worksheet.
Done? Pick up an
answersheet
from my desk and
mark your work
Done? Pick up the
circuit training worksheet
from my desk
Slide 19 - Slide
Slide 20 - Slide
More lessons like this
Herleiden en ontbinden in factoren
April 2018
- Lesson with
15 slides
Wiskunde
Middelbare school
havo
Leerjaar 2
TAALPORTFOLIO 1. TEDtalk
July 2025
- Lesson with
14 slides
Engels
Middelbare school
vmbo k
Leerjaar 3
Casus - Operation Albacore (Basisschool)
September 2021
- Lesson with
16 slides
by
SEA SHEPHERD
History
Engels
+2
Basisschool
Groep 5-8
SEA SHEPHERD
Casus - Operation Albacore (Middelbare school)
September 2021
- Lesson with
16 slides
by
SEA SHEPHERD
Social science
Engels
+2
Middelbare school
Leerjaar 1-6
SEA SHEPHERD
Cell cycle & mitosis
July 2025
- Lesson with
20 slides
Biologie
Middelbare school
vwo
Leerjaar 4
🎄🎅🏻 De XL LessonUp X-Mas Quiz - Editie 2024 🤶🏻🎄
December 2021
- Lesson with
65 slides
by
LessonUp Inspiratie
LessonUp
Kerstquiz
+3
Middelbare school
Basisschool
Praktijkonderwijs
Voortgezet speciaal onderwijs
MBO
HBO
WO
Beroepsopleiding
Speciaal Onderwijs
vmbo, mavo, havo, vwo
Leerroute VL
Leerroute VB
Leerroute VK
Leerroute VG
Leerroute VT
Leerroute M
Leerroute H
Leerroute V
Leerroute n1
Leerroute n2
Leerroute n3
Leerroute n4
Groep 6-8
Leerjaar 1-6
Studiejaar 1-4
LessonUp Inspiratie
Casus - Walvisbeschermingscampagne (Basisschool)
September 2021
- Lesson with
16 slides
by
SEA SHEPHERD
Engels
Social science
+2
Basisschool
Groep 5-8
SEA SHEPHERD
Casus - Walvisbeschermingscampagne (Middelbare school)
September 2021
- Lesson with
16 slides
by
SEA SHEPHERD
Science
Social science
+2
Middelbare school
Leerjaar 1-6
SEA SHEPHERD