4118 52y3 y2y4 + +x2 x30 – InterviewSolution

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4118 52y3 y2y4 + +x2 x30

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3) x + y = 48........(1) x + 4 = 5/2 (y + 4) 2x + 8 = 5y + 20 2x - 5y = 12........(2)(1)×2;2x + 2y = 96.........(3)(3)-(2);7y = 84;y= 12then x = 36

6)3x + 2y = 6......(1) 2x + 3y = 6......(2)(1)×3;9x + 6y = 18........(3)2x + 6y = 12........(4)(3)-(4);7x = 6x = 6/7then y = 12/7

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