u-7=-6u

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Solution for u-7=-6u equation: 



u-7=-6u

We move all terms to the left:

u-7-(-6u)=0

We get rid of parentheses

u+6u-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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