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2.1=24.5-7u
We move all terms to the left:
2.1-(24.5-7u)=0
We add all the numbers together, and all the variables
-(-7u+24.5)+2.1=0
We get rid of parentheses
7u-24.5+2.1=0
We add all the numbers together, and all the variables
7u-22.4=0
We move all terms containing u to the left, all other terms to the right
7u=22.4
u=22.4/7
u=3+1/5
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