40=2(z-61)

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Solution for 40=2(z-61) equation: 



40=2(z-61)

We move all terms to the left:

40-(2(z-61))=0



We calculate terms in parentheses: -(2(z-61)), so:

2(z-61)

We multiply parentheses

2z-122

Back to the equation:

-(2z-122)



We get rid of parentheses

-2z+122+40=0

We add all the numbers together, and all the variables

-2z+162=0

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

-2z=-162

z=-162/-2

z=+81

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