Answers

Subtract 45/84 from 72/40

1^st number: 1 32/40, 2^nd number: 45/84

72/40 - 45/84 is 177/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 84 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   72/40 = 72 × 21/40 × 21 = 1512/840
3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
   45/84 = 45 × 10/84 × 10 = 450/840
4. Subtract the two like fractions:
   1512/840 - 450/840 = 1512 - 450/840 = 1062/840
5. After reducing the fraction, the answer is 177/140
6. In mixed form: 137/140

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