Subtract 7/90 from 60/30
1st number: 2 0/30, 2nd number: 7/90
60/30 - 7/90 is 173/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
60/30 = 60 × 3/30 × 3 = 180/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
7/90 = 7 × 1/90 × 1 = 7/90 - Subtract the two like fractions:
180/90 - 7/90 = 180 - 7/90 = 173/90 - In mixed form: 183/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/30-14/90 60/30-21/90 60/90-7/90 60/30-35/90 60/30-49/90