9-10u=-9u

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Solution for 9-10u=-9u equation:



9-10u=-9u
We move all terms to the left:
9-10u-(-9u)=0
We get rid of parentheses
-10u+9u+9=0
We add all the numbers together, and all the variables
-1u+9=0
We move all terms containing u to the left, all other terms to the right
-u=-9
u=-9/-1
u=+9

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