Answers

Subtract 16/45 from 42/84

42/84 - 16/45 is 13/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 45 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 84 × 15 = 1260,
   42/84 = 42 × 15/84 × 15 = 630/1260
3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
   16/45 = 16 × 28/45 × 28 = 448/1260
4. Subtract the two like fractions:
   630/1260 - 448/1260 = 630 - 448/1260 = 182/1260
5. After reducing the fraction, the answer is 13/90

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