Question

Determine which equation below has a solution of a = 2.
A.
2a + 3a – 6 = –21
B.
8 = 3 + 4a – 3 – 5a
C.
–2 = 2 + 5a – 2 – 6a
D.
–4a + 3a – 6 = –4

Answer 1

C.

Answer 2

C

Answer 3

2 + 5 x 2 - 2 - 6 x 2 = -2.

Answer 4

better way
–2 = 2 + 5a – 2 – 6a
-2 = 2 - 2 +5a - 6a
-2 = - 1a
2 = a