Question

I need 18 please

???

Answer 1

Omg at school recently we learned the exact same thing.

(x-8)+4x=7x-16

5x-8=7x-16

-5x -5x

-----------------

-8=2x-16

+16 +16

-----------------

8=2x

4=x

7(4)-16

The answer is 12*