-5=7-3u

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Solution for -5=7-3u equation: 



-5=7-3u

We move all terms to the left:

-5-(7-3u)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

3u-7-5=0

We add all the numbers together, and all the variables

3u-12=0

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

3u=12

u=12/3

u=4

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