Answers

Subtract 30/40 from 56/42

1^st number: 1 14/42, 2^nd number: 30/40

56/42 - 30/40 is 7/12.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 42 × 20 = 840,
   56/42 = 56 × 20/42 × 20 = 1120/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   30/40 = 30 × 21/40 × 21 = 630/840
4. Subtract the two like fractions:
   1120/840 - 630/840 = 1120 - 630/840 = 490/840
5. After reducing the fraction, the answer is 7/12

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