Subtract 30/90 from 12/27
12/27 - 30/90 is 1/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
12/27 = 12 × 10/27 × 10 = 120/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
30/90 = 30 × 3/90 × 3 = 90/270 - Subtract the two like fractions:
120/270 - 90/270 = 120 - 90/270 = 30/270 - After reducing the fraction, the answer is 1/9
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