Answers

Subtract 42/8 from 20/70

1^st number: 20/70, 2^nd number: 5 2/8

20/70 - 42/8 is -139/28.

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,
   20/70 = 20 × 4/70 × 4 = 80/280
3. Likewise, for the 2nd fraction, since 8 × 35 = 280,
   42/8 = 42 × 35/8 × 35 = 1470/280
4. Subtract the two like fractions:
   80/280 - 1470/280 = 80 - 1470/280 = -1390/280
5. After reducing the fraction, the answer is -139/28

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