Subtract 32/60 from 45/90
45/90 - 32/60 is -1/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
45/90 = 45 × 2/90 × 2 = 90/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
32/60 = 32 × 3/60 × 3 = 96/180 - Subtract the two like fractions:
90/180 - 96/180 = 90 - 96/180 = -6/180 - After reducing the fraction, the answer is -1/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 45/90-64/60 45/90-96/60