Answers

Subtract 80/60 from 21/50

1^st number: 21/50, 2^nd number: 1 20/60

21/50 - 80/60 is -137/150.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 60 is 300
   
   Next, find the equivalent fraction of both fractional numbers with denominator 300
2. For the 1st fraction, since 50 × 6 = 300,
   21/50 = 21 × 6/50 × 6 = 126/300
3. Likewise, for the 2nd fraction, since 60 × 5 = 300,
   80/60 = 80 × 5/60 × 5 = 400/300
4. Subtract the two like fractions:
   126/300 - 400/300 = 126 - 400/300 = -274/300
5. After reducing the fraction, the answer is -137/150

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