1/5x-1/7=20

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Solution for 1/5x-1/7=20 equation: 


x in (-oo:+oo)

(1/5)*x-(1/7) = 20 // - 20

(1/5)*x-(1/7)-20 = 0

(1/5)*x-1/7-20 = 0

1/5*x-141/7 = 0 // + 141/7

1/5*x = 141/7 // : 1/5

x = 141/7/1/5

x = 705/7

x = 705/7

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