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x %2B 2*y %2B 1=0 |
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Answer» x + 2y = - 1...... (1)2x - 3y = 12..... (2) Multiply eq(1) by 22x + 4y = - 2.....(3) Subtract eq(2) from eq(3) 4y + 3y = - 2 - 127y = - 14y = - 14/7 = - 2 Put value of y in eq(1)x + 2*-2 = - 1x - 4 = - 1x = - 1 + 4 = 3 |
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