1.

148x + 231y = 527xy and 231x + 149y = 610xy.

Answer»

148x + 231y = 527xy   ......(1)

231x + 148y = 610xy   ......(2)

On adding both equations, we get

379x + 379y = 1137xy

⇒ x + y = 3xy     .......(3)

Subtract equation (2) from (1), we get

83x - 83y = 83xy

⇒ x - y = xy       .......(4)

From (3),

\(\frac1y + \frac1x = 3\)          .....(5)

From (4),

\(\frac1y - \frac1x = 1\)        ......(6)

On adding equations (5) & (6), we get

\(\frac2y=4\)

⇒ \(y = \frac24 = \frac12\)

\(\therefore 1x = 3 -\frac1y\)

= 3 - 2 = 1

⇒ x = 1

Hence, solution of given system of equations is x = 1, y = \(\frac12\)



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