Subtract 20/90 from 18/27
18/27 - 20/90 is 4/9.
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,
18/27 = 18 × 10/27 × 10 = 180/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
20/90 = 20 × 3/90 × 3 = 60/270 - Subtract the two like fractions:
180/270 - 60/270 = 180 - 60/270 = 120/270 - After reducing the fraction, the answer is 4/9
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