Subtract 10/27 from 28/90
28/90 - 10/27 is -8/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
28/90 = 28 × 3/90 × 3 = 84/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
10/27 = 10 × 10/27 × 10 = 100/270 - Subtract the two like fractions:
84/270 - 100/270 = 84 - 100/270 = -16/270 - After reducing the fraction, the answer is -8/135
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