42=-(7/9)y

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Solution for 42=-(7/9)y equation: 



42=-(7/9)y

We move all terms to the left:

42-(-(7/9)y)=0



Domain of the equation: 9)y)!=0

y!=0/1

y!=0

y∈R



We add all the numbers together, and all the variables

-(-(+7/9)y)+42=0

We multiply all the terms by the denominator


-(-(+7+42*9)y)=0



We calculate terms in parentheses: -(-(+7+42*9)y), so:

-(+7+42*9)y

We add all the numbers together, and all the variables

-385y

Back to the equation:

-(-385y)



We get rid of parentheses

385y=0

y=0/385

y=0

Równanie nie ma rozwiązania

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