72-27=9*(9-z)

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Solution for 72-27=9*(9-z) equation: 



72-27=9(9-z)

We move all terms to the left:

72-27-(9(9-z))=0

We add all the numbers together, and all the variables

-(9(-1z+9))+72-27=0

We add all the numbers together, and all the variables

-(9(-1z+9))+45=0



We calculate terms in parentheses: -(9(-1z+9)), so:

9(-1z+9)

We multiply parentheses

-9z+81

Back to the equation:

-(-9z+81)



We get rid of parentheses

9z-81+45=0

We add all the numbers together, and all the variables

9z-36=0

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

9z=36

z=36/9

z=4

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