2x/7-9=11

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Solution for 2x/7-9=11 equation: 


x in (-oo:+oo)

(2*x)/7-9 = 11 // - 11

(2*x)/7-11-9 = 0

2/7*x-20 = 0 // + 20

2/7*x = 20 // : 2/7

x = 20/2/7

x = 70

x = 70

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