Answers

Subtract 14/72 from 90/20

1^st number: 4 10/20, 2^nd number: 14/72

90/20 - 14/72 is 155/36.

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,
   90/20 = 90 × 18/20 × 18 = 1620/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   14/72 = 14 × 5/72 × 5 = 70/360
4. Subtract the two like fractions:
   1620/360 - 70/360 = 1620 - 70/360 = 1550/360
5. After reducing the fraction, the answer is 155/36
6. In mixed form: 411/36

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