15=7x-5x+3

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Solution for 15=7x-5x+3 equation: 


x in (-oo:+oo)

15 = 7*x-(5*x)+3 // - 7*x-(5*x)+3

5*x-(7*x)-3+15 = 0

5*x-7*x-3+15 = 0

12-2*x = 0 // - 12

-2*x = -12 // : -2

x = -12/(-2)

x = 6

x = 6

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