Answers

Subtract 21/8 from 56/70

1^st number: 56/70, 2^nd number: 2 5/8

56/70 - 21/8 is -73/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 8 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 70 × 4 = 280,
   56/70 = 56 × 4/70 × 4 = 224/280
3. Likewise, for the 2nd fraction, since 8 × 35 = 280,
   21/8 = 21 × 35/8 × 35 = 735/280
4. Subtract the two like fractions:
   224/280 - 735/280 = 224 - 735/280 = -511/280
5. After reducing the fraction, the answer is -73/40

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