SOLUTION: 3 z/4 - 8 z/7 = 2 find z trying to help kid with homework need refreshed on answer so I can show her how to do it.

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Question 788864: 3 z/4 - 8 z/7 = 2 find z
trying to help kid with homework need refreshed on answer so I can show her how to do it.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
3 z/4 - 8 z/7 = 2 find z
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Muliply thru by 28 to eliminate fractions.
21z - 24z = 56
-3z = 56
z = -56/3