7-2u=-1-u

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Solution for 7-2u=-1-u equation: 



7-2u=-1-u

We move all terms to the left:

7-2u-(-1-u)=0

We add all the numbers together, and all the variables

-2u-(-1u-1)+7=0

We get rid of parentheses

-2u+1u+1+7=0

We add all the numbers together, and all the variables

-1u+8=0

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

-u=-8

u=-8/-1

u=+8

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