Question

Sue’s couch is 200 centimeters long. It is 16 centimeters less than 3 times the length of the matching chair. How long is the matching chair.

Answer 1

The length of the matching chair is
`72\ cm`

Explanation:

Let

x -----> the length of the matching chair

we know that

The linear equation that represent this situation is

`200=3x-16`

solve for x

Adds 16 both sides

`200+16=3x-16+16`

`216=3x`

Divide by 3 both sides

`216/3=x`

Rewrite

`x=72\ cm`