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OpenStudy (anonymous):
need help with system: -14=-20y-7x 2x=10y +4 I have 20y-4x=-8 and -20y-7x=-14, but i think i did something wrong after that
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OpenStudy (anonymous):
what did you do wrong?
OpenStudy (anonymous):
i got -11x=-24
OpenStudy (anonymous):
but I got x = 2 and y = 0 :-(
OpenStudy (anonymous):
how?
OpenStudy (anonymous):
-20y + 4x = 8 => =20y = 8 -4x - 20y - 7x = -14 -8 - 4x - 7x = -14 -11x = -22 x = 2 -20y + 4(2) = 8 -20y = 0 y = 0
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OpenStudy (anonymous):
oh, i see
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