Solutions by everydaycalculation.com

1^{st} number: 1 10/20, 2^{nd} number: 63/80

3020 - 6380 is 5780.

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

LCM of 20 and 80 is**80**

Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,

3020 = 30 × 420 × 4 = 12080 - Likewise, for the 2nd fraction, since 80 × 1 = 80,

6380 = 63 × 180 × 1 = 6380 - Subtract the two like fractions:

12080 - 6380 = 120 - 6380 = 5780

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