3u+7=5u+1

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Solution for 3u+7=5u+1 equation: 



3u+7=5u+1

We move all terms to the left:

3u+7-(5u+1)=0

We get rid of parentheses

3u-5u-1+7=0

We add all the numbers together, and all the variables

-2u+6=0

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

-2u=-6

u=-6/-2

u=+3

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