Question

Solve for x.

y=7x−7z−9

Answer choices are listed in pic

Answer 1

Choice number 1..........

Answer 2

The correct option is A)
`x=(y+9+7z)/(7)`

Explanation:

Consider the provided equation.

`y=7x-7z-9`

We need to solve the provided equation for x.

Add 9 both side.

`y+9=7x-7z`

Now add 7z to both side.

`y+9+7z=7x-7z+7z`

`y+9+7z=7x`

Divide both sides by 7.

`(7x)/(7)=(y+9+7z)/(7)`

`x=(y+9+7z)/(7)`

Hence, the correct option is A)
`x=(y+9+7z)/(7)`