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Question

solve by elimination method 3x -7y = 2:2x + 14y =20.

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Solution

The given system of equations is :3x - 7y = 2 ....12x + 14y = 20 .....2Multiply 1 by 2, we get6x - 14y = 4 ....3Adding 2 and 3, we get8x = 24x = 3Put x = 3 in 1, we get3×3-7y = 2-7y = 2-9-7y = -7y = 1

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