Answers

Subtract 48/30 from 21/90

1^st number: 21/90, 2^nd number: 1 18/30

21/90 - 48/30 is -41/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 30 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   21/90 = 21 × 1/90 × 1 = 21/90
3. Likewise, for the 2nd fraction, since 30 × 3 = 90,
   48/30 = 48 × 3/30 × 3 = 144/90
4. Subtract the two like fractions:
   21/90 - 144/90 = 21 - 144/90 = -123/90
5. After reducing the fraction, the answer is -41/30

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