The number of solutions of 3x+y = 243 and 243x-y =The number of solutions of 3x+y = 243 and 243x-y =
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3x+y = 243 = 35 So x + y =5----------(1) 243x-y = 3 (35)x-y = 31 So 5x -5y =1---------(2) Since : a 1 a 2 ≠ b 1 b 2 a1a2≠b1b2.
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