-7-8=-9u

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Solution for -7-8=-9u equation:



-7-8=-9u
We move all terms to the left:
-7-8-(-9u)=0
We add all the numbers together, and all the variables
-(-9u)-15=0
We get rid of parentheses
9u-15=0
We move all terms containing u to the left, all other terms to the right
9u=15
u=15/9
u=1+2/3

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