SOLUTION: 7/z=9/z-1/5 The solution is?

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Question 282817: 7/z=9/z-1/5
The solution is?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
7/z=9/z-1/5
subtract 9/z from both sides
-2/z=-1/5
cross multiply (ie multiply both sides by z and by 5
-2*5=-1*z
divide by-1
2*5=z
10=z
check
7/10=9/10-1/5
7/10=9/10-2/10
7/10=7/10
ok