7z-2z+3=12

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Solution for 7z-2z+3=12 equation: 



7z-2z+3=12

We move all terms to the left:

7z-2z+3-(12)=0

We add all the numbers together, and all the variables

5z-9=0

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

5z=9

z=9/5

z=1+4/5

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