Subtract 14/9 from 42/90
1st number: 42/90, 2nd number: 1 5/9
42/90 - 14/9 is -49/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
42/90 = 42 × 1/90 × 1 = 42/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
14/9 = 14 × 10/9 × 10 = 140/90 - Subtract the two like fractions:
42/90 - 140/90 = 42 - 140/90 = -98/90 - After reducing the fraction, the answer is -49/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90-14/9 42/90-28/9 42/90-14/18 42/90-42/9 42/90-14/27 42/90-70/9 42/90-14/45 42/90-98/9 42/90-14/63