3z+21=4z+24+9

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Solution for 3z+21=4z+24+9 equation: 



3z+21=4z+24+9

We move all terms to the left:

3z+21-(4z+24+9)=0

We add all the numbers together, and all the variables

3z-(4z+33)+21=0

We get rid of parentheses

3z-4z-33+21=0

We add all the numbers together, and all the variables

-1z-12=0

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

-z=12

z=12/-1

z=-12

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