Answers

Subtract 20/30 from 42/9

1^st number: 4 6/9, 2^nd number: 20/30

42/9 - 20/30 is 4/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 30 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 9 × 10 = 90,
   42/9 = 42 × 10/9 × 10 = 420/90
3. Likewise, for the 2nd fraction, since 30 × 3 = 90,
   20/30 = 20 × 3/30 × 3 = 60/90
4. Subtract the two like fractions:
   420/90 - 60/90 = 420 - 60/90 = 360/90
5. After reducing the fraction, the answer is 4/1

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