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-12.3u=-19.1u-8.16
We move all terms to the left:
-12.3u-(-19.1u-8.16)=0
We get rid of parentheses
-12.3u+19.1u+8.16=0
We add all the numbers together, and all the variables
6.8u+8.16=0
We move all terms containing u to the left, all other terms to the right
6.8u=-8.16
u=-8.16/6.8
u=-1+1/5
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