Answer:
a=-4
Step-by-step explanation:
a = 2 + 3a + 6
We need to get a on one side and the constants on the other
Subtract 3a from each side
a-3a = 2+3a-3a +6
-2a = 8
Divide each side by -2
-2a/-2 = 8/-2
a = -4
