42=-7/4u

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Solution for 42=-7/4u equation: 



42=-7/4u

We move all terms to the left:

42-(-7/4u)=0



Domain of the equation: 4u)!=0

u!=0/1

u!=0

u∈R



We get rid of parentheses

7/4u+42=0

We multiply all the terms by the denominator


42*4u+7=0

Wy multiply elements

168u+7=0

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

168u=-7

u=-7/168

u=-1/24

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