12z+4=15z-9

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Solution for 12z+4=15z-9 equation: 



12z+4=15z-9

We move all terms to the left:

12z+4-(15z-9)=0

We get rid of parentheses

12z-15z+9+4=0

We add all the numbers together, and all the variables

-3z+13=0

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

-3z=-13

z=-13/-3

z=4+1/3

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