Subtract 7/60 from 90/30
1st number: 3 0/30, 2nd number: 7/60
90/30 - 7/60 is 173/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
90/30 = 90 × 2/30 × 2 = 180/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
7/60 = 7 × 1/60 × 1 = 7/60 - Subtract the two like fractions:
180/60 - 7/60 = 180 - 7/60 = 173/60 - In mixed form: 253/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30-14/60 90/60-7/60 90/30-21/60 90/30-35/60 90/30-49/60