Question

A student tries to solve the equation 2(x-7)=x-9. the student's work is shown to the right.

Describe any errors. Then solve the equation correctly

Answer 1

See step by step

Explanation:

He didnt use the distributive property.

How to solve it is

`2(x - 7) = x - 9`

`2x - 14 = x - 9`

`x - 14 = - 9`

`x = 5`

Answer 2

I can't see what the student did to solve the equation so I'll just solve the equation step by step here.

Explanation:

2(x-7)=x-9

2x-14=x-9 Use distributive property to solve the parenthesis

x-14=-9 Subtract the x on both sides

x=5