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7.9u-2-3.2-10=2.8+u
We move all terms to the left:
7.9u-2-3.2-10-(2.8+u)=0
We add all the numbers together, and all the variables
7.9u-(u+2.8)-2-3.2-10=0
We add all the numbers together, and all the variables
7.9u-(u+2.8)-15.2=0
We get rid of parentheses
7.9u-u-2.8-15.2=0
We add all the numbers together, and all the variables
6.9u-18=0
We move all terms containing u to the left, all other terms to the right
6.9u=18
u=18/6.9
u=2+1.90909090909/3.13636363636
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