Subtract 8/80 from 4/7
4/7 - 8/80 is 33/70.
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,
8/80 = 8 × 7/80 × 7 = 56/560 - Subtract the two like fractions:
320/560 - 56/560 = 320 - 56/560 = 264/560 - After reducing the fraction, the answer is 33/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7-8/80 4/7-16/80 4/14-8/80 12/7-8/80 4/7-24/80 4/21-8/80 20/7-8/80 4/7-40/80 4/35-8/80 28/7-8/80 4/7-56/80 4/49-8/80