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13.85+18.1u=-2.02+18.8u
We move all terms to the left:
13.85+18.1u-(-2.02+18.8u)=0
We add all the numbers together, and all the variables
18.1u-(18.8u-2.02)+13.85=0
We get rid of parentheses
18.1u-18.8u+2.02+13.85=0
We add all the numbers together, and all the variables
-0.7u+15.87=0
We move all terms containing u to the left, all other terms to the right
-0.7u=-15.87
u=-15.87/-0.7
u=22+0.47/0.7
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