If x = 28 and y = 51, then (x + y) + (x – y) = ?

If x = 28 and y = 51, then (x + y) + (x – y) = ?

  • (a) 53
  • (b) 56
  • (c) 92
  • (d) 102
Solution:
  • We are given: x = 28 and y = 51
  • The expression to be evaluated is: (x + y) + (x - y)
  • Step 1: plug in the numbers: (28 + 51) + (28 - 51)
  • Step 2: simplify inside the parentheses: 79 + (-23)
  • Step 3: add: 79 - 23 = 56 ans.
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Related MCQs:

 ‘NATO’ is an abbreviation of:

  • (A) North Atlantic Treaty Organization
  • (B) Non-Aligned Treaty Organization
  • (C) Non-Aligned Trading Organization
  • (D) North American Transport Organization

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