Question 677531
xy-x^2=-20
x-2y=3 --> y = (x-3)/2
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xy-x^2=-20
Sub for y
{{{x*(x-3)/2 - x^2 = -20}}}
{{{x*(x-3) - 2x^2 = -40}}}
{{{x^2 + 3x - 40 = 0}}}
(x+8)*(x-5) = 0
x = -8, y = -5.5
x = 5, y = 1