-69=-7u-6

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Solution for -69=-7u-6 equation: 



-69=-7u-6

We move all terms to the left:

-69-(-7u-6)=0

We get rid of parentheses

7u+6-69=0

We add all the numbers together, and all the variables

7u-63=0

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

7u=63

u=63/7

u=9

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