# 7.U5A.L4.5- Solving 1-step equations

Unit 5: Lesson 4 and 5
Solving 1 step equations
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Slide 1: Slide

This lesson contains 14 slides, with interactive quizzes and text slides.

## Items in this lesson

Unit 5: Lesson 4 and 5
Solving 1 step equations

#### Slide 1 -Slide

Does the variable have to stand for something when we write an expression/equation? explain

#### Slide 2 -Open question

simplify the following expression

3x +5x
A
8x2
B
8+2x
C
8
D
8x

#### Slide 3 -Quiz

simplify the following expression
7(10c)

A
17c
B
7+10c
C
70c
D
-3c

#### Slide 4 -Quiz

simplify the following expression
1/2(2x+2)
A
x+1
B
2 1/2 +2x
C
x+2

#### Slide 5 -Quiz

1 step equations
1 step equations are equations that, when simplified, have only 1 operation

ex: x + 3 = 5        5z = 10
y-9 =11           n/6 = 21

#### Slide 6 -Slide

Solving 1 step equations
Operations are step up in pairs that work together.
the operations are opposites of each other, one undoes what the other does

#### Slide 7 -Slide

Inverse Operations
Ex. 2 x 4 = 8.... 8 / 4 = 2     division undoes multiplication and you end up with your original number

Ex. 6-4 = 2     2+4 = 6    addition undoes subtraction and you end up with your original number
Therefore these are INVERSE OPERATIONS! -Inverse operations are operations that undo each other

#### Slide 8 -Slide

Inverse Operations
We use inverse operations to solve 1 step equations

#### Slide 9 -Slide

Example: x-2 = 3
This is a GAME!
To win: always get the variable on 1 side and numbers on the other

#### Slide 10 -Slide

Example:   y + 5 =10

#### Slide 11 -Slide

Example: 2c = 265

Example: u/4 =7

#### Slide 13 -Slide

There is no quiz for Lesson 5