x-(30x/100)=y

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Solution for x-(30x/100)=y equation: 


x in (-oo:+oo)

x-((30*x)/100) = y // - y

x-((30*x)/100)-y = 0

x+(-3/10)*x-y = 0

7/10*x-y = 0 // + y

7/10*x = y // : 7/10

x = y/7/10

x = 10/7*y

x = 10/7*y

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