7z+7=90

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Solution for 7z+7=90 equation: 



7z+7=90

We move all terms to the left:

7z+7-(90)=0

We add all the numbers together, and all the variables

7z-83=0

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

7z=83

z=83/7

z=11+6/7

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