-1=7x+2x-1

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Solution for -1=7x+2x-1 equation: 


x in (-oo:+oo)

-1 = 7*x+2*x-1 // - 7*x+2*x-1

1-(7*x)-(2*x)-1 = 0

1-7*x-2*x-1 = 0

-9*x = 0 // : -9

x = 0

x = 0

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