27.8=4(21.2)+u

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Solution for 27.8=4(21.2)+u equation: 



27.8=4(21.2)+u

We move all terms to the left:

27.8-(4(21.2)+u)=0



We calculate terms in parentheses: -(4(21.2)+u), so:

4(21.2)+u

determiningTheFunctionDomain
u+4(21.2)

We add all the numbers together, and all the variables

u+84.8

Back to the equation:

-(u+84.8)



We get rid of parentheses

-u-84.8+27.8=0

We add all the numbers together, and all the variables

-1u-57=0

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

-u=57

u=57/-1

u=-57

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