Subtract 30/27 from 24/42
1st number: 24/42, 2nd number: 1 3/27
24/42 - 30/27 is -34/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
24/42 = 24 × 9/42 × 9 = 216/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
30/27 = 30 × 14/27 × 14 = 420/378 - Subtract the two like fractions:
216/378 - 420/378 = 216 - 420/378 = -204/378 - After reducing the fraction, the answer is -34/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/42-30/27 24/42-60/27 24/84-30/27 24/42-30/54 72/42-30/27 24/42-90/27 24/42-30/81