(2x-4)/4=9

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Solution for (2x-4)/4=9 equation: 


x in (-oo:+oo)

(2*x-4)/4 = 9 // - 9

(2*x-4)/4-9 = 0

(2*x-4)/4+(-9*4)/4 = 0

2*x-9*4-4 = 0

2*x-40 = 0

(2*x-40)/4 = 0

(2*x-40)/4 = 0 // * 4

2*x-40 = 0

2*x-40 = 0 // + 40

2*x = 40 // : 2

x = 40/2

x = 20

x = 20

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