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-9.4u-11.77=8.12-2.1u
We move all terms to the left:
-9.4u-11.77-(8.12-2.1u)=0
We add all the numbers together, and all the variables
-9.4u-(-2.1u+8.12)-11.77=0
We get rid of parentheses
-9.4u+2.1u-8.12-11.77=0
We add all the numbers together, and all the variables
-7.3u-19.89=0
We move all terms containing u to the left, all other terms to the right
-7.3u=19.89
u=19.89/-7.3
u=-2+4.1007751937984/5.6589147286822
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