55=4u+7

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Solution for 55=4u+7 equation: 



55=4u+7

We move all terms to the left:

55-(4u+7)=0

We get rid of parentheses

-4u-7+55=0

We add all the numbers together, and all the variables

-4u+48=0

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

-4u=-48

u=-48/-4

u=+12

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