Subtract 42/27 from 10/30
1st number: 10/30, 2nd number: 1 15/27
10/30 - 42/27 is -11/9.
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,
10/30 = 10 × 9/30 × 9 = 90/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
42/27 = 42 × 10/27 × 10 = 420/270 - Subtract the two like fractions:
90/270 - 420/270 = 90 - 420/270 = -330/270 - After reducing the fraction, the answer is -11/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/30-42/27 10/30-84/27 10/60-42/27 10/30-42/54 10/90-42/27 10/30-42/81 50/30-42/27 70/30-42/27