Answers

Subtract 90/48 from 90/20

1^st number: 4 10/20, 2^nd number: 1 42/48

90/20 - 90/48 is 21/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 48 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 20 × 12 = 240,
   90/20 = 90 × 12/20 × 12 = 1080/240
3. Likewise, for the 2nd fraction, since 48 × 5 = 240,
   90/48 = 90 × 5/48 × 5 = 450/240
4. Subtract the two like fractions:
   1080/240 - 450/240 = 1080 - 450/240 = 630/240
5. After reducing the fraction, the answer is 21/8
6. In mixed form: 25/8

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