2u+1=7-u

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



2u+1=7-u

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

2u+1u-7+1=0

We add all the numbers together, and all the variables

3u-6=0

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

3u=6

u=6/3

u=2

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