Simplify 31/2 – (21/3 * 11/4) + 3/5

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Mathematics JAMB 2005

Simplify 31/2 – (21/3 * 11/4) + 3/5

  • 211/60
  • 21/60
  • 111/60 checkmark
  • 11/60

The correct answer is: C

Explanation

31/2 - (21/3 * 11/4) + 3/5
= 7/2 - (7/3 * 5/4) + 3/5
= 7/2 - 35/12 + 3/5
= L.C.M = 60
= (210 - 175 + 36)/60
= 71/60
= 111/60
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