Subtract 3/27 from 21/30
21/30 - 3/27 is 53/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 30 × 9 = 270,
21/30 = 21 × 9/30 × 9 = 189/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
3/27 = 3 × 10/27 × 10 = 30/270 - Subtract the two like fractions:
189/270 - 30/270 = 189 - 30/270 = 159/270 - After reducing the fraction, the answer is 53/90
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