Solutions by everydaycalculation.com

1^{st} number: 2 9/20, 2^{nd} number: 4 10/15

4920 - 7015 is -13360.

- Find the least common denominator or LCM of the two denominators:

LCM of 20 and 15 is**60**

Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,

4920 = 49 × 320 × 3 = 14760 - Likewise, for the 2nd fraction, since 15 × 4 = 60,

7015 = 70 × 415 × 4 = 28060 - Subtract the two like fractions:

14760 - 28060 = 147 - 28060 = -13360

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