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x-x(7/100)=580
We move all terms to the left:
x-x(7/100)-(580)=0
We add all the numbers together, and all the variables
x-x(+7/100)-580=0
We multiply parentheses
-7x^2+x-580=0
a = -7; b = 1; c = -580;
Δ = b2-4ac
Δ = 12-4·(-7)·(-580)
Δ = -16239
Delta is less than zero, so there is no solution for the equation
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