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Question

Fill in the blanks:

14+15+12=___


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Solution

  • Step 1: The least common denominator (LCD) of 2, 4 and 5 is 20. Make the denominator as 20 for all the fractions.

14=1×54×5=520;

15=1×45×4=420;

12=1×102×10=1020

  • Step 2: Add the numerators and write the sum over the common denominator.

520+420+1020=5+4+1020=1920

  • Hence, 14+15+12=1920.

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