7+11u=-1+u+6u

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Solution for 7+11u=-1+u+6u equation: 



7+11u=-1+u+6u

We move all terms to the left:

7+11u-(-1+u+6u)=0

We add all the numbers together, and all the variables

11u-(7u-1)+7=0

We get rid of parentheses

11u-7u+1+7=0

We add all the numbers together, and all the variables

4u+8=0

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

4u=-8

u=-8/4

u=-2

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