12+20z=-z-7

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Solution for 12+20z=-z-7 equation: 



12+20z=-z-7

We move all terms to the left:

12+20z-(-z-7)=0

We add all the numbers together, and all the variables

20z-(-1z-7)+12=0

We get rid of parentheses

20z+1z+7+12=0

We add all the numbers together, and all the variables

21z+19=0

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

21z=-19

z=-19/21

z=-19/21

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