Answers

Subtract 72/7 from 42/5

1^st number: 8 2/5, 2^nd number: 10 2/7

42/5 - 72/7 is -66/35.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 7 is 35
   
   Next, find the equivalent fraction of both fractional numbers with denominator 35
2. For the 1st fraction, since 5 × 7 = 35,
   42/5 = 42 × 7/5 × 7 = 294/35
3. Likewise, for the 2nd fraction, since 7 × 5 = 35,
   72/7 = 72 × 5/7 × 5 = 360/35
4. Subtract the two like fractions:
   294/35 - 360/35 = 294 - 360/35 = -66/35

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