Answers

Subtract 72/20 from 7/35

1^st number: 7/35, 2^nd number: 3 12/20

7/35 - 72/20 is -17/5.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 35 × 4 = 140,
   7/35 = 7 × 4/35 × 4 = 28/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   72/20 = 72 × 7/20 × 7 = 504/140
4. Subtract the two like fractions:
   28/140 - 504/140 = 28 - 504/140 = -476/140
5. After reducing the fraction, the answer is -17/5

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