Subtract 42/27 from 2/90
1st number: 2/90, 2nd number: 1 15/27
2/90 - 42/27 is -23/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
2/90 = 2 × 3/90 × 3 = 6/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
42/27 = 42 × 10/27 × 10 = 420/270 - Subtract the two like fractions:
6/270 - 420/270 = 6 - 420/270 = -414/270 - After reducing the fraction, the answer is -23/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/90-42/27 2/90-84/27 2/90-42/54 6/90-42/27 2/90-42/81 10/90-42/27 14/90-42/27