3z-4=8+7z

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Solution for 3z-4=8+7z equation: 



3z-4=8+7z

We move all terms to the left:

3z-4-(8+7z)=0

We add all the numbers together, and all the variables

3z-(7z+8)-4=0

We get rid of parentheses

3z-7z-8-4=0

We add all the numbers together, and all the variables

-4z-12=0

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

-4z=12

z=12/-4

z=-3

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