2x+9=7x-11

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


x in (-oo:+oo)

2*x+9 = 7*x-11 // - 7*x-11

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

2*x-7*x+9+11 = 0

20-5*x = 0 // - 20

-5*x = -20 // : -5

x = -20/(-5)

x = 4

x = 4

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