-11z-12+2=20-9z

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Solution for -11z-12+2=20-9z equation: 



-11z-12+2=20-9z

We move all terms to the left:

-11z-12+2-(20-9z)=0

We add all the numbers together, and all the variables

-11z-(-9z+20)-12+2=0

We add all the numbers together, and all the variables

-11z-(-9z+20)-10=0

We get rid of parentheses

-11z+9z-20-10=0

We add all the numbers together, and all the variables

-2z-30=0

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

-2z=30

z=30/-2

z=-15

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