-7u=7-8u

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Solution for -7u=7-8u equation: 



-7u=7-8u

We move all terms to the left:

-7u-(7-8u)=0

We add all the numbers together, and all the variables

-7u-(-8u+7)=0

We get rid of parentheses

-7u+8u-7=0

We add all the numbers together, and all the variables

u-7=0

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

u=7

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