3z+6=4z-9

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Solution for 3z+6=4z-9 equation: 



3z+6=4z-9

We move all terms to the left:

3z+6-(4z-9)=0

We get rid of parentheses

3z-4z+9+6=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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