Question

. Solve the following pairs of equations:
(i) 5m – 5n = 12; 2m + 9n = 20 (vi) 39 x + 4 1y = 76; 41x + 39y = 84
(ii)4x + 5y = 7, 3x + 4y = 5
(iii) x – y = 0.9, 11 x  y = 2
(iv) 8x – 3y = 5xy; 6x – 5y = - 2xy (viii) a(x + y) + b(x – y) = a2 + b2- ab (v) 99x + 101y = 499; 101x + 99y = 501

Answer 1

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