Answers

Subtract 30/20 from 56/70

1^st number: 56/70, 2^nd number: 1 10/20

56/70 - 30/20 is -7/10.

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,
   56/70 = 56 × 2/70 × 2 = 112/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   30/20 = 30 × 7/20 × 7 = 210/140
4. Subtract the two like fractions:
   112/140 - 210/140 = 112 - 210/140 = -98/140
5. After reducing the fraction, the answer is -7/10

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