Subtract 36/90 from 28/84
28/84 - 36/90 is -1/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
28/84 = 28 × 15/84 × 15 = 420/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
36/90 = 36 × 14/90 × 14 = 504/1260 - Subtract the two like fractions:
420/1260 - 504/1260 = 420 - 504/1260 = -84/1260 - After reducing the fraction, the answer is -1/15
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