Subtract 1/90 from 60/45
1st number: 1 15/45, 2nd number: 1/90
60/45 - 1/90 is 119/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
60/45 = 60 × 2/45 × 2 = 120/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
1/90 = 1 × 1/90 × 1 = 1/90 - Subtract the two like fractions:
120/90 - 1/90 = 120 - 1/90 = 119/90 - In mixed form: 129/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/45-2/90 60/90-1/90 60/45-3/90 60/45-5/90 60/45-7/90