3u-7=u+3

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



3u-7=u+3

We move all terms to the left:

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

We get rid of parentheses

3u-u-3-7=0

We add all the numbers together, and all the variables

2u-10=0

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

2u=10

u=10/2

u=5

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