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34 votes
34 votes
PLS HELP!!!!!!!!!!!!!!!!

PLS HELP!!!!!!!!!!!!!!!!-example-1
User Ovabrandon
by
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1 Answer

17 votes
17 votes

Answer:

second option, (u - 12 - 3b)/4

Explanation:

isolate the "a" by bring each term to the other side, and finally div by 4

u = 12 + 4a + 3b

u - 12 = 4a + 3b

u - 12 - 3b = 4a

(u - 12 - 3b)/4 = a

User Boris Kirzner
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