9=5u-2u

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Solution for 9=5u-2u equation:



9=5u-2u
We move all terms to the left:
9-(5u-2u)=0
We add all the numbers together, and all the variables
-(+3u)+9=0
We get rid of parentheses
-3u+9=0
We move all terms containing u to the left, all other terms to the right
-3u=-9
u=-9/-3
u=+3

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