Answers

Subtract 20/90 from 42/16

1^st number: 2 10/16, 2^nd number: 20/90

42/16 - 20/90 is 173/72.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 90 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 16 × 45 = 720,
   42/16 = 42 × 45/16 × 45 = 1890/720
3. Likewise, for the 2nd fraction, since 90 × 8 = 720,
   20/90 = 20 × 8/90 × 8 = 160/720
4. Subtract the two like fractions:
   1890/720 - 160/720 = 1890 - 160/720 = 1730/720
5. After reducing the fraction, the answer is 173/72
6. In mixed form: 229/72

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