u-13=2(u-45)

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Solution for u-13=2(u-45) equation: 



u-13=2(u-45)

We move all terms to the left:

u-13-(2(u-45))=0



We calculate terms in parentheses: -(2(u-45)), so:

2(u-45)

We multiply parentheses

2u-90

Back to the equation:

-(2u-90)



We get rid of parentheses

u-2u+90-13=0

We add all the numbers together, and all the variables

-1u+77=0

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

-u=-77

u=-77/-1

u=+77

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