Answers

Subtract 70/21 from 42/35

1^st number: 1 7/35, 2^nd number: 3 7/21

42/35 - 70/21 is -32/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 21 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 35 × 3 = 105,
   42/35 = 42 × 3/35 × 3 = 126/105
3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
   70/21 = 70 × 5/21 × 5 = 350/105
4. Subtract the two like fractions:
   126/105 - 350/105 = 126 - 350/105 = -224/105
5. After reducing the fraction, the answer is -32/15

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