Subtract 80/36 from 45/25
1st number: 1 20/25, 2nd number: 2 8/36
45/25 - 80/36 is -19/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 36 is 900
Next, find the equivalent fraction of both fractional numbers with denominator 900 - For the 1st fraction, since 25 × 36 = 900,
45/25 = 45 × 36/25 × 36 = 1620/900 - Likewise, for the 2nd fraction, since 36 × 25 = 900,
80/36 = 80 × 25/36 × 25 = 2000/900 - Subtract the two like fractions:
1620/900 - 2000/900 = 1620 - 2000/900 = -380/900 - After reducing the fraction, the answer is -19/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/25-80/36 45/50-80/36 45/25-80/72 45/75-80/36