-9=6+5u

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Solution for -9=6+5u equation:



-9=6+5u
We move all terms to the left:
-9-(6+5u)=0
We add all the numbers together, and all the variables
-(5u+6)-9=0
We get rid of parentheses
-5u-6-9=0
We add all the numbers together, and all the variables
-5u-15=0
We move all terms containing u to the left, all other terms to the right
-5u=15
u=15/-5
u=-3

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