Question

What expression below is equivalent to 3a + 12?

3(a + 12)
В.
3(a + 4)
C.
15 + a
D.
15a

Answer 1

B. 3(a + 4)

Explanation:

Divide by a factor of 3:

3a/3 = a

12/3 = 4

Therefore, 3(a + 4) is equivalent to 3a + 12.