Subtract 7/30 from 90/10
1st number: 9 0/10, 2nd number: 7/30
90/10 - 7/30 is 263/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
90/10 = 90 × 3/10 × 3 = 270/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
7/30 = 7 × 1/30 × 1 = 7/30 - Subtract the two like fractions:
270/30 - 7/30 = 270 - 7/30 = 263/30 - In mixed form: 823/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10-14/30 90/20-7/30 90/10-7/60 90/10-21/30 90/30-7/30 90/10-7/90 90/10-35/30 90/50-7/30 90/10-49/30 90/70-7/30