13=2.5(z+7)

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Solution for 13=2.5(z+7) equation: 



13=2.5(z+7)

We move all terms to the left:

13-(2.5(z+7))=0



We calculate terms in parentheses: -(2.5(z+7)), so:

2.5(z+7)

We multiply parentheses

2.5z+17.5

Back to the equation:

-(2.5z+17.5)



We get rid of parentheses

-2.5z-17.5+13=0

We add all the numbers together, and all the variables

-2.5z-4.5=0

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

-2.5z=4.5

z=4.5/-2.5

z=-1+1/1.25

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