3u-1=7u+2

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Solution for 3u-1=7u+2 equation: 



3u-1=7u+2

We move all terms to the left:

3u-1-(7u+2)=0

We get rid of parentheses

3u-7u-2-1=0

We add all the numbers together, and all the variables

-4u-3=0

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

-4u=3

u=3/-4

u=-3/4

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