WAEC Mathematics 2017 Theory — Question 3

Question 3 of 25 from the West African Examinations Council (WAEC) Mathematics 2017 Theory paper, with the correct answer and a full explanation.

2(a) Solve the equation: (2/3)(3x-5) - (3/5)(2x-3) = 3

Model answer

Multiply through by 15 (LCM of 3 and 5): 10(3x-5) - 9(2x-3) = 45. 30x-50-18x+27=45. 12x-23=45. 12x=68. x = 68/12 = 5 2/3.

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