Answers

Subtract 16/42 from 90/45

1^st number: 2 0/45, 2^nd number: 16/42

90/45 - 16/42 is 34/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 42 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 45 × 14 = 630,
   90/45 = 90 × 14/45 × 14 = 1260/630
3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
   16/42 = 16 × 15/42 × 15 = 240/630
4. Subtract the two like fractions:
   1260/630 - 240/630 = 1260 - 240/630 = 1020/630
5. After reducing the fraction, the answer is 34/21
6. In mixed form: 113/21

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