Answers

Subtract 45/20 from 90/48

1^st number: 1 42/48, 2^nd number: 2 5/20

90/48 - 45/20 is -3/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 48 and 20 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 48 × 5 = 240,
   90/48 = 90 × 5/48 × 5 = 450/240
3. Likewise, for the 2nd fraction, since 20 × 12 = 240,
   45/20 = 45 × 12/20 × 12 = 540/240
4. Subtract the two like fractions:
   450/240 - 540/240 = 450 - 540/240 = -90/240
5. After reducing the fraction, the answer is -3/8

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