Answers

Subtract 42/90 from 20/2

1^st number: 10 0/2, 2^nd number: 42/90

20/2 - 42/90 is 143/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 2 and 90 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 2 × 45 = 90,
   20/2 = 20 × 45/2 × 45 = 900/90
3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
   42/90 = 42 × 1/90 × 1 = 42/90
4. Subtract the two like fractions:
   900/90 - 42/90 = 900 - 42/90 = 858/90
5. After reducing the fraction, the answer is 143/15
6. In mixed form: 98/15

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