Answers

Subtract 56/84 from 30/90

30/90 - 56/84 is -1/3.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 84 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 90 × 14 = 1260,
   30/90 = 30 × 14/90 × 14 = 420/1260
3. Likewise, for the 2nd fraction, since 84 × 15 = 1260,
   56/84 = 56 × 15/84 × 15 = 840/1260
4. Subtract the two like fractions:
   420/1260 - 840/1260 = 420 - 840/1260 = -420/1260
5. After reducing the fraction, the answer is -1/3

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