4.3=21.8-7u

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Solution for 4.3=21.8-7u equation: 



4.3=21.8-7u

We move all terms to the left:

4.3-(21.8-7u)=0

We add all the numbers together, and all the variables

-(-7u+21.8)+4.3=0

We get rid of parentheses

7u-21.8+4.3=0

We add all the numbers together, and all the variables

7u-17.5=0

We move all terms containing u to the left, all other terms to the right

7u=17.5

u=17.5/7

u=2+2.3333333333333/4.6666666666667

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