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Consider the following equation:


This equation is currently incorrect. By interchanging one pair of numbers within the equation, it can be made correct. Which pair of numbers should be swapped to balance the equation correctly?

  1. A
  2. B
  3. C
  4. D

Solution & Step-by-step Explanation

Let's test Option D by swapping the numbers and .
The original equation is:



Replacing with and with :



Applying BODMAS rule:
First, division:
The equation becomes:



Next, multiplication:
The equation becomes:



Finally, addition and subtraction:



LHS = RHS. Thus, swapping and balances the equation.

Practice this question

Try it yourself before checking the explanation above.

Consider the following equation:


This equation is currently incorrect. By interchanging one pair of numbers within the equation, it can be made correct. Which pair of numbers should be swapped to balance the equation correctly?
A
B
C
D

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