To eliminate y, let’s multiply the first equation by 5 and the second by 2. 5*(3x – 2y = 27) => 15x – 10y = 135 2*(2x + 5y = -1) => 4x + 10y = - 2 By adding these 2 equations we will get

19x = 133 x = 7 Note: Substituting the value of x in equation 1, we can compute the value of y. 3(7) – 2y = 27 21 – 2y = 27 -2y = 6 y = -3

Apr 8th, 2015

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