7z-8+5z+2=90

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Solution for 7z-8+5z+2=90 equation: 



7z-8+5z+2=90

We move all terms to the left:

7z-8+5z+2-(90)=0

We add all the numbers together, and all the variables

12z-96=0

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

12z=96

z=96/12

z=8

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