Answers

Subtract 30/42 from 49/40

1^st number: 1 9/40, 2^nd number: 30/42

49/40 - 30/42 is 143/280.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 42 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   49/40 = 49 × 21/40 × 21 = 1029/840
3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
   30/42 = 30 × 20/42 × 20 = 600/840
4. Subtract the two like fractions:
   1029/840 - 600/840 = 1029 - 600/840 = 429/840
5. After reducing the fraction, the answer is 143/280

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