3u+6+2u=7u-7+9

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Solution for 3u+6+2u=7u-7+9 equation: 



3u+6+2u=7u-7+9

We move all terms to the left:

3u+6+2u-(7u-7+9)=0

We add all the numbers together, and all the variables

3u+2u-(7u+2)+6=0

We add all the numbers together, and all the variables

5u-(7u+2)+6=0

We get rid of parentheses

5u-7u-2+6=0

We add all the numbers together, and all the variables

-2u+4=0

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

-2u=-4

u=-4/-2

u=+2

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