Answers

Subtract 40/42 from 70/40

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

70/40 - 40/42 is 67/84.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 42 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   70/40 = 70 × 21/40 × 21 = 1470/840
3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
   40/42 = 40 × 20/42 × 20 = 800/840
4. Subtract the two like fractions:
   1470/840 - 800/840 = 1470 - 800/840 = 670/840
5. After reducing the fraction, the answer is 67/84

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