8z+3=2z+21

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Solution for 8z+3=2z+21 equation: 



8z+3=2z+21

We move all terms to the left:

8z+3-(2z+21)=0

We get rid of parentheses

8z-2z-21+3=0

We add all the numbers together, and all the variables

6z-18=0

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

6z=18

z=18/6

z=3

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