Subtract 72/80 from 4/6
4/6 - 72/80 is -7/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 6 × 40 = 240,
4/6 = 4 × 40/6 × 40 = 160/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
72/80 = 72 × 3/80 × 3 = 216/240 - Subtract the two like fractions:
160/240 - 216/240 = 160 - 216/240 = -56/240 - After reducing the fraction, the answer is -7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/6-72/80 4/12-72/80 12/6-72/80 4/18-72/80 20/6-72/80 4/30-72/80 28/6-72/80 4/42-72/80