u+55=20u+5-7

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Solution for u+55=20u+5-7 equation: 



u+55=20u+5-7

We move all terms to the left:

u+55-(20u+5-7)=0

We add all the numbers together, and all the variables

u-(20u-2)+55=0

We get rid of parentheses

u-20u+2+55=0

We add all the numbers together, and all the variables

-19u+57=0

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

-19u=-57

u=-57/-19

u=+3

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