x/9=3x/7-20

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Solution for x/9=3x/7-20 equation: 


x in (-oo:+oo)

x/9 = (3*x)/7-20 // - (3*x)/7-20

x/9-((3*x)/7)+20 = 0

x/9+(-3/7)*x+20 = 0

20-20/63*x = 0 // - 20

-20/63*x = -20 // : -20/63

x = -20/(-20/63)

x = 63

x = 63

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