7+6u=-u

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Solution for 7+6u=-u equation: 



7+6u=-u

We move all terms to the left:

7+6u-(-u)=0

We add all the numbers together, and all the variables

6u-(-1u)+7=0

We get rid of parentheses

6u+1u+7=0

We add all the numbers together, and all the variables

7u+7=0

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

7u=-7

u=-7/7

u=-1

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