42=-7/3u

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Solution for 42=-7/3u equation: 



42=-7/3u

We move all terms to the left:

42-(-7/3u)=0



Domain of the equation: 3u)!=0

u!=0/1

u!=0

u∈R



We get rid of parentheses

7/3u+42=0

We multiply all the terms by the denominator


42*3u+7=0

Wy multiply elements

126u+7=0

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

126u=-7

u=-7/126

u=-1/18

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