7+5z=7z+15

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Solution for 7+5z=7z+15 equation: 



7+5z=7z+15

We move all terms to the left:

7+5z-(7z+15)=0

We get rid of parentheses

5z-7z-15+7=0

We add all the numbers together, and all the variables

-2z-8=0

We move all terms containing z to the left, all other terms to the right

-2z=8

z=8/-2

z=-4

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