9z+10=21-2z

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Solution for 9z+10=21-2z equation: 



9z+10=21-2z

We move all terms to the left:

9z+10-(21-2z)=0

We add all the numbers together, and all the variables

9z-(-2z+21)+10=0

We get rid of parentheses

9z+2z-21+10=0

We add all the numbers together, and all the variables

11z-11=0

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

11z=11

z=11/11

z=1

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