Answers

Subtract 2/70 from 21/28

21/28 - 2/70 is 101/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 70 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 28 × 5 = 140,
   21/28 = 21 × 5/28 × 5 = 105/140
3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
   2/70 = 2 × 2/70 × 2 = 4/140
4. Subtract the two like fractions:
   105/140 - 4/140 = 105 - 4/140 = 101/140

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