Question

. Here is an equation 2x + 9 = -15. Write three different equations that have the same solution as 2x + 9 = -15. Show or explain how you found them.

Answer 1

1.
`x-3=-15`
2.
`2x=-24`
3.
`2x-3=-27`

Explanation:

Given the following question:


`2x+9=-15`

To find three equations that have the same solution as the given equation we have to first solve the equation.


`2x+9=-15`

`9-9=0`

`-15-9=-24`

`2x=-24`

`2x/2=x`

`-24/2=-12`

`x=-12`

Equation one:

`x-3=-15`

`-3+3=0`

`-15+3=-12`

`x=-12`

Equation two:

`2x=-24`

`2x/2=x`

`-24/2=-12`

`x=-12`

Equation three:

`2x-3=-27`

`-3+3=0`

`-27+3=-24`

`-24/2=-12`

`x=-12`

Hope this helps.