Answers

Subtract 42/54 from 45/15

1^st number: 3 0/15, 2^nd number: 42/54

45/15 - 42/54 is 20/9.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 54 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 15 × 18 = 270,
   45/15 = 45 × 18/15 × 18 = 810/270
3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
   42/54 = 42 × 5/54 × 5 = 210/270
4. Subtract the two like fractions:
   810/270 - 210/270 = 810 - 210/270 = 600/270
5. After reducing the fraction, the answer is 20/9
6. In mixed form: 22/9

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