Answers

Subtract 40/84 from 80/42

1^st number: 1 38/42, 2^nd number: 40/84

80/42 - 40/84 is 10/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 42 × 2 = 84,
   80/42 = 80 × 2/42 × 2 = 160/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   40/84 = 40 × 1/84 × 1 = 40/84
4. Subtract the two like fractions:
   160/84 - 40/84 = 160 - 40/84 = 120/84
5. After reducing the fraction, the answer is 10/7
6. In mixed form: 13/7

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