Subtract 9/7 from 90/3
1st number: 30 0/3, 2nd number: 1 2/7
90/3 - 9/7 is 201/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
90/3 = 90 × 7/3 × 7 = 630/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
9/7 = 9 × 3/7 × 3 = 27/21 - Subtract the two like fractions:
630/21 - 27/21 = 630 - 27/21 = 603/21 - After reducing the fraction, the answer is 201/7
- In mixed form: 285/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/3-18/7 90/6-9/7 90/3-9/14 90/3-27/7 90/9-9/7 90/3-9/21 90/3-45/7 90/15-9/7 90/3-9/35 90/3-63/7 90/21-9/7 90/3-9/49