Answers

Subtract 5/90 from 42/20

1^st number: 2 2/20, 2^nd number: 5/90

42/20 - 5/90 is 92/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   42/20 = 42 × 9/20 × 9 = 378/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   5/90 = 5 × 2/90 × 2 = 10/180
4. Subtract the two like fractions:
   378/180 - 10/180 = 378 - 10/180 = 368/180
5. After reducing the fraction, the answer is 92/45
6. In mixed form: 22/45

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