SOLUTION: If 3a + 4b=b which of the following must equal 6a + 6b? (a). 0 (b). 12 (c) 12b

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Question 468412: If 3a + 4b=b which of the following must equal 6a + 6b?
(a). 0
(b). 12
(c) 12b
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
3a + 4b=b
subtracting b from both sides:
3a + 3b=0
multiplying both sides by 2:
6a + 6b=0
.
Answer: 'a'