7=z+4

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Solution for 7=z+4 equation: 



7=z+4

We move all terms to the left:

7-(z+4)=0

We get rid of parentheses

-z-4+7=0

We add all the numbers together, and all the variables

-1z+3=0

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

-z=-3

z=-3/-1

z=+3

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