7z-3-2z+9=15+6

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Solution for 7z-3-2z+9=15+6 equation: 



7z-3-2z+9=15+6

We move all terms to the left:

7z-3-2z+9-(15+6)=0

We add all the numbers together, and all the variables

7z-2z-3+9-21=0

We add all the numbers together, and all the variables

5z-15=0

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

5z=15

z=15/5

z=3

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