12z-7-3z=5z+2(z+1)=

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Solution for 12z-7-3z=5z+2(z+1)= equation: 



12z-7-3z=5z+2(z+1)=

We move all terms to the left:

12z-7-3z-(5z+2(z+1))=0

We add all the numbers together, and all the variables

9z-(5z+2(z+1))-7=0



We calculate terms in parentheses: -(5z+2(z+1)), so:

5z+2(z+1)

We multiply parentheses

5z+2z+2

We add all the numbers together, and all the variables

7z+2

Back to the equation:

-(7z+2)



We get rid of parentheses

9z-7z-2-7=0

We add all the numbers together, and all the variables

2z-9=0

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

2z=9

z=9/2

z=4+1/2

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