Answers

Subtract 72/7 from 18/4

1^st number: 4 2/4, 2^nd number: 10 2/7

18/4 - 72/7 is -81/14.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 7 is 28
   
   Next, find the equivalent fraction of both fractional numbers with denominator 28
2. For the 1st fraction, since 4 × 7 = 28,
   18/4 = 18 × 7/4 × 7 = 126/28
3. Likewise, for the 2nd fraction, since 7 × 4 = 28,
   72/7 = 72 × 4/7 × 4 = 288/28
4. Subtract the two like fractions:
   126/28 - 288/28 = 126 - 288/28 = -162/28
5. After reducing the fraction, the answer is -81/14

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