Subtract 48/21 from 40/27
1st number: 1 13/27, 2nd number: 2 6/21
40/27 - 48/21 is -152/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 21 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
40/27 = 40 × 7/27 × 7 = 280/189 - Likewise, for the 2nd fraction, since 21 × 9 = 189,
48/21 = 48 × 9/21 × 9 = 432/189 - Subtract the two like fractions:
280/189 - 432/189 = 280 - 432/189 = -152/189
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