7z-4=-7

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Solution for 7z-4=-7 equation: 



7z-4=-7

We move all terms to the left:

7z-4-(-7)=0

We add all the numbers together, and all the variables

7z+3=0

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

7z=-3

z=-3/7

z=-3/7

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