Answers

Subtract 25/10 from 28/70

1^st number: 28/70, 2^nd number: 2 5/10

28/70 - 25/10 is -21/10.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 10 is 70
   
   Next, find the equivalent fraction of both fractional numbers with denominator 70
2. For the 1st fraction, since 70 × 1 = 70,
   28/70 = 28 × 1/70 × 1 = 28/70
3. Likewise, for the 2nd fraction, since 10 × 7 = 70,
   25/10 = 25 × 7/10 × 7 = 175/70
4. Subtract the two like fractions:
   28/70 - 175/70 = 28 - 175/70 = -147/70
5. After reducing the fraction, the answer is -21/10

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