Question

What is -3 (8x)+6(4x) ;x=2

Answer 1

-3 (8x)+6 (4x) -3 (16)+6 (8) -48+48= 0

Answer 2

Well since we know what x equals we can just plug that into the equation.

-3(8 * 2) + 6(4*2)

Do what is in parentheses first

-3(16) + 6(8)

-48 + 48

The negative and the positive end up canceling out to make this 0