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Question

Solve the equations by reduction method; 2x4y+3z=1,x2y+4z=3,3xy+5z=2

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Solution

2x4y+3=1x2y+4z=3;3xy+5z=2
Let z=k
2x4y=13z(1)x2y=34z(2)
and 3xy=25z(3)2×333x6y=912z3xy=25z++5y=77zy=(7z7)5=75(z1)
also 3xy=25z3x7[5](z1)=25z3x=(25z)5+7(z1)53x=1025z+7x75x318z5 and y=75(z1)

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