2+6u=7u+9

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



2+6u=7u+9

We move all terms to the left:

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

We get rid of parentheses

6u-7u-9+2=0

We add all the numbers together, and all the variables

-1u-7=0

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

-u=7

u=7/-1

u=-7

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