Answers

Subtract 35/80 from 70/21

1^st number: 3 7/21, 2^nd number: 35/80

70/21 - 35/80 is 139/48.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 80 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 21 × 80 = 1680,
   70/21 = 70 × 80/21 × 80 = 5600/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   35/80 = 35 × 21/80 × 21 = 735/1680
4. Subtract the two like fractions:
   5600/1680 - 735/1680 = 5600 - 735/1680 = 4865/1680
5. After reducing the fraction, the answer is 139/48
6. In mixed form: 243/48

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