8z+7=9z+2

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Solution for 8z+7=9z+2 equation: 



8z+7=9z+2

We move all terms to the left:

8z+7-(9z+2)=0

We get rid of parentheses

8z-9z-2+7=0

We add all the numbers together, and all the variables

-1z+5=0

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

-z=-5

z=-5/-1

z=+5

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