-2z+3+z=-12

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Solution for -2z+3+z=-12 equation: 



-2z+3+z=-12

We move all terms to the left:

-2z+3+z-(-12)=0

We add all the numbers together, and all the variables

-1z+15=0

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

-z=-15

z=-15/-1

z=+15

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