7/20x-8/30y

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Solution for 7/20x-8/30y equation: 


x in (-oo:+oo)

(7/20)*x-((8/30)*y) = 0

(7/20)*x+(-4/15)*y = 0

7/20*x-4/15*y = 0 // + -4/15*y

7/20*x = -(-4/15*y) // : 7/20

x = (-(-4/15*y))/7/20

x = 16/21*y

x = 16/21*y

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