Question

What is the value of x when -3x + 7x = -12?

A) -3
B) -6/5
C) 3
D 4/7

Answer 1

a) -3

I took the test, hope this helps :)

Answer 2

A) -3

Explanation:

-3x+7x=-12(add -3 and +7 which gives +4 or just 4)

so 4x=-12(divide 4 on both sides of equation)

that gives x=-3 as 4/4 is one and 12/4 =3 and because there is minus sign in front of 12 so it is -3