Answers

Subtract 20/42 from 70/15

1^st number: 4 10/15, 2^nd number: 20/42

70/15 - 20/42 is 88/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 42 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 15 × 14 = 210,
   70/15 = 70 × 14/15 × 14 = 980/210
3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
   20/42 = 20 × 5/42 × 5 = 100/210
4. Subtract the two like fractions:
   980/210 - 100/210 = 980 - 100/210 = 880/210
5. After reducing the fraction, the answer is 88/21
6. In mixed form: 44/21

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