Answers

Subtract 15/70 from 40/20

1^st number: 2 0/20, 2^nd number: 15/70

40/20 - 15/70 is 25/14.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 70 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   40/20 = 40 × 7/20 × 7 = 280/140
3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
   15/70 = 15 × 2/70 × 2 = 30/140
4. Subtract the two like fractions:
   280/140 - 30/140 = 280 - 30/140 = 250/140
5. After reducing the fraction, the answer is 25/14
6. In mixed form: 111/14

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