3z+5=4z-7

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Solution for 3z+5=4z-7 equation: 



3z+5=4z-7

We move all terms to the left:

3z+5-(4z-7)=0

We get rid of parentheses

3z-4z+7+5=0

We add all the numbers together, and all the variables

-1z+12=0

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

-z=-12

z=-12/-1

z=+12

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