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2u+2.73=18.57
We move all terms to the left:
2u+2.73-(18.57)=0
We add all the numbers together, and all the variables
2u-15.84=0
We move all terms containing u to the left, all other terms to the right
2u=15.84
u=15.84/2
u=7+1/1.0869565217391
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