Answers

Subtract 21/7 from 50/42

1^st number: 1 8/42, 2^nd number: 3 0/7

50/42 - 21/7 is -38/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 7 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 42 × 1 = 42,
   50/42 = 50 × 1/42 × 1 = 50/42
3. Likewise, for the 2nd fraction, since 7 × 6 = 42,
   21/7 = 21 × 6/7 × 6 = 126/42
4. Subtract the two like fractions:
   50/42 - 126/42 = 50 - 126/42 = -76/42
5. After reducing the fraction, the answer is -38/21

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