Answers

Subtract 40/72 from 75/42

1^st number: 1 33/42, 2^nd number: 40/72

75/42 - 40/72 is 155/126.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 42 × 12 = 504,
   75/42 = 75 × 12/42 × 12 = 900/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   40/72 = 40 × 7/72 × 7 = 280/504
4. Subtract the two like fractions:
   900/504 - 280/504 = 900 - 280/504 = 620/504
5. After reducing the fraction, the answer is 155/126
6. In mixed form: 129/126

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