Answers

Subtract 42/45 from 90/5

1^st number: 18 0/5, 2^nd number: 42/45

90/5 - 42/45 is 256/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 45 is 45
   
   Next, find the equivalent fraction of both fractional numbers with denominator 45
2. For the 1st fraction, since 5 × 9 = 45,
   90/5 = 90 × 9/5 × 9 = 810/45
3. Likewise, for the 2nd fraction, since 45 × 1 = 45,
   42/45 = 42 × 1/45 × 1 = 42/45
4. Subtract the two like fractions:
   810/45 - 42/45 = 810 - 42/45 = 768/45
5. After reducing the fraction, the answer is 256/15
6. In mixed form: 171/15

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