(7z+9)-(6z+12)=-6

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Solution for (7z+9)-(6z+12)=-6 equation: 



(7z+9)-(6z+12)=-6

We move all terms to the left:

(7z+9)-(6z+12)-(-6)=0

We add all the numbers together, and all the variables

(7z+9)-(6z+12)+6=0

We get rid of parentheses

7z-6z+9-12+6=0

We add all the numbers together, and all the variables

z+3=0

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

z=-3

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