10(x-3)/2=20x/7

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Solution for 10(x-3)/2=20x/7 equation: 


x in (-oo:+oo)

(10*(x-3))/2 = (20*x)/7 // - (20*x)/7

(10*(x-3))/2-((20*x)/7) = 0

(10*(x-3))/2+(-20/7)*x = 0

(10*(x-3))/2+(-20*x)/7 = 0

(7*10*(x-3))/(2*7)+(-20*2*x)/(2*7) = 0

7*10*(x-3)-20*2*x = 0

30*x-210 = 0

(30*x-210)/(2*7) = 0

(30*x-210)/(2*7) = 0 // * 2*7

30*x-210 = 0

30*x-210 = 0 // + 210

30*x = 210 // : 30

x = 210/30

x = 7

x = 7

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