Subtract 42/30 from 12/27
1st number: 12/27, 2nd number: 1 12/30
12/27 - 42/30 is -43/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 30 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
12/27 = 12 × 10/27 × 10 = 120/270 - Likewise, for the 2nd fraction, since 30 × 9 = 270,
42/30 = 42 × 9/30 × 9 = 378/270 - Subtract the two like fractions:
120/270 - 378/270 = 120 - 378/270 = -258/270 - After reducing the fraction, the answer is -43/45
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