Subtract 45/60 from 12/45
12/45 - 45/60 is -29/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
12/45 = 12 × 4/45 × 4 = 48/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
45/60 = 45 × 3/60 × 3 = 135/180 - Subtract the two like fractions:
48/180 - 135/180 = 48 - 135/180 = -87/180 - After reducing the fraction, the answer is -29/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/45-45/60 12/45-90/60 12/90-45/60 36/45-45/60 60/45-45/60 84/45-45/60