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(9u+6)*0.5-0.5u=0
We add all the numbers together, and all the variables
-0.5u+(9u+6)*0.5=0
We multiply parentheses
-0.5u+4.5u+3=0
We add all the numbers together, and all the variables
4u+3=0
We move all terms containing u to the left, all other terms to the right
4u=-3
u=-3/4
u=-3/4
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