Answers

Subtract 80/72 from 2/20

1^st number: 2/20, 2^nd number: 1 8/72

2/20 - 80/72 is -91/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 20 × 18 = 360,
   2/20 = 2 × 18/20 × 18 = 36/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   80/72 = 80 × 5/72 × 5 = 400/360
4. Subtract the two like fractions:
   36/360 - 400/360 = 36 - 400/360 = -364/360
5. After reducing the fraction, the answer is -91/90

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