Subtract 9/80 from 4/7
4/7 - 9/80 is 257/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
4/7 = 4 × 80/7 × 80 = 320/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
9/80 = 9 × 7/80 × 7 = 63/560 - Subtract the two like fractions:
320/560 - 63/560 = 320 - 63/560 = 257/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7-9/80 4/7-18/80 4/14-9/80 12/7-9/80 4/7-27/80 4/21-9/80 20/7-9/80 4/7-45/80 4/35-9/80 28/7-9/80 4/7-63/80 4/49-9/80