# 22.1 Setting up equations to solve problems

WALT
Set up your own equations and use them to solve worded problems.
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Slide 1: Slide
MathematicsSecondary Education

This lesson contains 10 slides, with interactive quizzes and text slides.

## Items in this lesson

WALT
Set up your own equations and use them to solve worded problems.

#### Slide 1 -Slide

Make an equation in terms of x and then solve it.

#### Slide 2 -Slide

If a number is subtracted from nine the result is -5.

#### Slide 3 -Open question

Three times the sum of a number and four gives 150

#### Slide 4 -Open question

A number is doubled and then six is added. When this is divided by four, the result is seven. What is the number?

#### Slide 5 -Open question

Solving more complex problems

#### Slide 6 -Slide

A grandfather is six times as old as his grandson. If the grandfather was 45 when his grandson was born, how old is the grandson?

#### Slide 7 -Open question

A rectangle of perimeter 74 cm is 7cm longer than it is wide. What is the length of each side.

#### Slide 8 -Open question

Amira is twice as old as her cousin Pam. Nine years ago, their combined age was 18. What are their present age?

#### Slide 9 -Open question

The age of a man is 24 years more than his son. In two years, the father’s age will be twice that of his son. What are their present age?