Answers

Subtract 20/70 from 72/45

1^st number: 1 27/45, 2^nd number: 20/70

72/45 - 20/70 is 46/35.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 45 × 14 = 630,
   72/45 = 72 × 14/45 × 14 = 1008/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   20/70 = 20 × 9/70 × 9 = 180/630
4. Subtract the two like fractions:
   1008/630 - 180/630 = 1008 - 180/630 = 828/630
5. After reducing the fraction, the answer is 46/35
6. In mixed form: 111/35

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