9u=u+40

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Solution for 9u=u+40 equation:



9u=u+40
We move all terms to the left:
9u-(u+40)=0
We get rid of parentheses
9u-u-40=0
We add all the numbers together, and all the variables
8u-40=0
We move all terms containing u to the left, all other terms to the right
8u=40
u=40/8
u=5

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