Subtract 54/27 from 21/30
1st number: 21/30, 2nd number: 2 0/27
21/30 - 54/27 is -13/10.
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,
54/27 = 54 × 10/27 × 10 = 540/270 - Subtract the two like fractions:
189/270 - 540/270 = 189 - 540/270 = -351/270 - After reducing the fraction, the answer is -13/10
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