Answers

Subtract 30/20 from 25/70

1^st number: 25/70, 2^nd number: 1 10/20

25/70 - 30/20 is -8/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 70 × 2 = 140,
   25/70 = 25 × 2/70 × 2 = 50/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   30/20 = 30 × 7/20 × 7 = 210/140
4. Subtract the two like fractions:
   50/140 - 210/140 = 50 - 210/140 = -160/140
5. After reducing the fraction, the answer is -8/7

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