42/x=3,5

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Solution for 42/x=3,5 equation: 



42/x=3.5

We move all terms to the left:

42/x-(3.5)=0



Domain of the equation: x!=0

x∈R



We add all the numbers together, and all the variables

42/x-3.5=0

We multiply all the terms by the denominator


-(3.5)*x+42=0

We multiply parentheses

-3.5x+42=0

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

-3.5x=-42

x=-42/-3.5

x=+12

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