Question

What is the solution of 3(4a + 2) = 2(a − 2)?

A. -1
B. -0.4
C. 0.4
D. 1

Answer 1

The answer is A and heres the work^

Answer 2

a = - 1  → A

distribute brackets on both sides of the equation

12a + 6 = 2a - 4 ( subtract 2a from both sides )

12a - 2a + 6 = - 4

10a + 6 = - 4 ( subtract 6 from both sides )

10a = - 4 - 6 = - 10 ( divide both sides by 10 )

a = - 1