9+5u=-9+3u

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Solution for 9+5u=-9+3u equation:



9+5u=-9+3u
We move all terms to the left:
9+5u-(-9+3u)=0
We add all the numbers together, and all the variables
5u-(3u-9)+9=0
We get rid of parentheses
5u-3u+9+9=0
We add all the numbers together, and all the variables
2u+18=0
We move all terms containing u to the left, all other terms to the right
2u=-18
u=-18/2
u=-9

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