-(z+12)=-21-4z+3

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Solution for -(z+12)=-21-4z+3 equation: 



-(z+12)=-21-4z+3

We move all terms to the left:

-(z+12)-(-21-4z+3)=0

We add all the numbers together, and all the variables

-(z+12)-(-4z-18)=0

We get rid of parentheses

-z+4z-12+18=0

We add all the numbers together, and all the variables

3z+6=0

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

3z=-6

z=-6/3

z=-2

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