Answers

Subtract 35/20 from 42/50

1^st number: 42/50, 2^nd number: 1 15/20

42/50 - 35/20 is -91/100.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 20 is 100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 100
2. For the 1st fraction, since 50 × 2 = 100,
   42/50 = 42 × 2/50 × 2 = 84/100
3. Likewise, for the 2nd fraction, since 20 × 5 = 100,
   35/20 = 35 × 5/20 × 5 = 175/100
4. Subtract the two like fractions:
   84/100 - 175/100 = 84 - 175/100 = -91/100

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