Answers

Subtract 72/60 from 63/90

1^st number: 63/90, 2^nd number: 1 12/60

63/90 - 72/60 is -1/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 60 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 90 × 2 = 180,
   63/90 = 63 × 2/90 × 2 = 126/180
3. Likewise, for the 2nd fraction, since 60 × 3 = 180,
   72/60 = 72 × 3/60 × 3 = 216/180
4. Subtract the two like fractions:
   126/180 - 216/180 = 126 - 216/180 = -90/180
5. After reducing the fraction, the answer is -1/2

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