Answers

Subtract 42/20 from 35/72

1^st number: 35/72, 2^nd number: 2 2/20

35/72 - 42/20 is -581/360.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 20 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   35/72 = 35 × 5/72 × 5 = 175/360
3. Likewise, for the 2nd fraction, since 20 × 18 = 360,
   42/20 = 42 × 18/20 × 18 = 756/360
4. Subtract the two like fractions:
   175/360 - 756/360 = 175 - 756/360 = -581/360

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