Answers

Subtract 3/80 from 45/84

45/84 - 3/80 is 279/560.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 80 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 84 × 20 = 1680,
   45/84 = 45 × 20/84 × 20 = 900/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   3/80 = 3 × 21/80 × 21 = 63/1680
4. Subtract the two like fractions:
   900/1680 - 63/1680 = 900 - 63/1680 = 837/1680
5. After reducing the fraction, the answer is 279/560

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