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8.9u+13.53+1.86=6.6u+6.88
We move all terms to the left:
8.9u+13.53+1.86-(6.6u+6.88)=0
We add all the numbers together, and all the variables
8.9u-(6.6u+6.88)+15.39=0
We get rid of parentheses
8.9u-6.6u-6.88+15.39=0
We add all the numbers together, and all the variables
2.3u+8.51=0
We move all terms containing u to the left, all other terms to the right
2.3u=-8.51
u=-8.51/2.3
u=-3+1/1.4285714285714
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