3=2z-7

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Solution for 3=2z-7 equation: 



3=2z-7

We move all terms to the left:

3-(2z-7)=0

We get rid of parentheses

-2z+7+3=0

We add all the numbers together, and all the variables

-2z+10=0

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

-2z=-10

z=-10/-2

z=+5

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