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15x + 3y = 9 -----(1)Place x = 3 in equation (I).5x + 3y = 92r + 3y = 12 ----- (11)Let's add equtions (1) and (IT).5x + 3y = 9+ 2x - 3y = 123y = 9-O3y = Ox=.. Solution is (x, y) = (CD). |
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