Subtract 2/90 from 7/15
7/15 - 2/90 is 4/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
7/15 = 7 × 6/15 × 6 = 42/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
2/90 = 2 × 1/90 × 1 = 2/90 - Subtract the two like fractions:
42/90 - 2/90 = 42 - 2/90 = 40/90 - After reducing the fraction, the answer is 4/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/15-2/90 7/15-4/90 7/30-2/90 21/15-2/90 7/15-6/90 7/45-2/90 35/15-2/90 7/15-10/90 7/75-2/90 49/15-2/90 7/15-14/90