Answers

Subtract 4/80 from 84/72

1^st number: 1 12/72, 2^nd number: 4/80

84/72 - 4/80 is 67/60.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 72 × 10 = 720,
   84/72 = 84 × 10/72 × 10 = 840/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   4/80 = 4 × 9/80 × 9 = 36/720
4. Subtract the two like fractions:
   840/720 - 36/720 = 840 - 36/720 = 804/720
5. After reducing the fraction, the answer is 67/60
6. In mixed form: 17/60

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