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Hello,After completing a page of Simultaneous Equations i am stuck with this. suddenly i have x and y's everywhere, and keep rearaging it wrong. please show me what to do. even if its just a little clue.Solve for x and y:4 + (4y ÷ x) = -4x^-1 and x^2 + 7xy = 19xThanks, J
4 + 4y / x = 1 / -4x -> multiply by x4x + 4y = -1/44y = -4x - 1/4y = -x - 1/16x^2 + 7xy = 19x -> divide by xx + 7y = 19x = 19 - 7yI would use the substitution method to solve the system:y = -(19 - 7y) - 1/16y = 7y - 19 - 1/16-6y = -305 / 16y = 305 / 96
Last edited by ryos (2005-10-21 10:27:12)
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