Subtract 90/30 from 7/3
1st number: 2 1/3, 2nd number: 3 0/30
7/3 - 90/30 is -2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 3 × 10 = 30,
7/3 = 7 × 10/3 × 10 = 70/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
90/30 = 90 × 1/30 × 1 = 90/30 - Subtract the two like fractions:
70/30 - 90/30 = 70 - 90/30 = -20/30 - After reducing the fraction, the answer is -2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/3-90/30 7/6-90/30 7/3-90/60 21/3-90/30 7/9-90/30 35/3-90/30 7/15-90/30 49/3-90/30 7/21-90/30