Answers

Subtract 20/40 from 75/70

1^st number: 1 5/70, 2^nd number: 20/40

75/70 - 20/40 is 4/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 70 × 4 = 280,
   75/70 = 75 × 4/70 × 4 = 300/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   20/40 = 20 × 7/40 × 7 = 140/280
4. Subtract the two like fractions:
   300/280 - 140/280 = 300 - 140/280 = 160/280
5. After reducing the fraction, the answer is 4/7

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