Solutions by everydaycalculation.com

1^{st} number: 3 10/20, 2^{nd} number: 7 5/10

7020 - 7510 is -41.

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

LCM of 20 and 10 is**20**

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

7020 = 70 × 120 × 1 = 7020 - Likewise, for the 2nd fraction, since 10 × 2 = 20,

7510 = 75 × 210 × 2 = 15020 - Subtract the two like fractions:

7020 - 15020 = 70 - 15020 = -8020 - After reducing the fraction, the answer is -41

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