Subtract 21/27 from 40/30
1st number: 1 10/30, 2nd number: 21/27
40/30 - 21/27 is 5/9.
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,
40/30 = 40 × 9/30 × 9 = 360/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
21/27 = 21 × 10/27 × 10 = 210/270 - Subtract the two like fractions:
360/270 - 210/270 = 360 - 210/270 = 150/270 - After reducing the fraction, the answer is 5/9
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