Answers

Subtract 10/40 from 72/42

1^st number: 1 30/42, 2^nd number: 10/40

72/42 - 10/40 is 41/28.

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,
   72/42 = 72 × 20/42 × 20 = 1440/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   10/40 = 10 × 21/40 × 21 = 210/840
4. Subtract the two like fractions:
   1440/840 - 210/840 = 1440 - 210/840 = 1230/840
5. After reducing the fraction, the answer is 41/28
6. In mixed form: 113/28

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