Subtract 80/6 from 45/21
1st number: 2 3/21, 2nd number: 13 2/6
45/21 - 80/6 is -235/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
45/21 = 45 × 2/21 × 2 = 90/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
80/6 = 80 × 7/6 × 7 = 560/42 - Subtract the two like fractions:
90/42 - 560/42 = 90 - 560/42 = -470/42 - After reducing the fraction, the answer is -235/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21-80/6 45/42-80/6 45/21-80/12 45/63-80/6 45/21-80/18 45/21-80/30 45/21-80/42