SOLUTION: 4z+12=7z-9

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Question 136988: 4z+12=7z-9
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
4z+12=7z-9
4Z-7Z=-9-12
-3Z=-21
Z=-21/-3
Z=7 ANSWER.
PROOF
4*7+12=7*7-9
28+12=49-9
40=40