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8.9u+64.8=3.5u
We move all terms to the left:
8.9u+64.8-(3.5u)=0
We add all the numbers together, and all the variables
8.9u-(+3.5u)+64.8=0
We get rid of parentheses
8.9u-3.5u+64.8=0
We add all the numbers together, and all the variables
5.4u+64.8=0
We move all terms containing u to the left, all other terms to the right
5.4u=-64.8
u=-64.8/5.4
u=-11+1/1
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