Subtract 42/27 from 45/30
1st number: 1 15/30, 2nd number: 1 15/27
45/30 - 42/27 is -1/18.
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,
45/30 = 45 × 9/30 × 9 = 405/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
42/27 = 42 × 10/27 × 10 = 420/270 - Subtract the two like fractions:
405/270 - 420/270 = 405 - 420/270 = -15/270 - After reducing the fraction, the answer is -1/18
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