Subtract 6/70 from 3/80
3/80 - 6/70 is -27/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
3/80 = 3 × 7/80 × 7 = 21/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
6/70 = 6 × 8/70 × 8 = 48/560 - Subtract the two like fractions:
21/560 - 48/560 = 21 - 48/560 = -27/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/80-6/70 3/80-12/70 9/80-6/70 3/80-18/70 15/80-6/70 3/80-30/70 21/80-6/70 3/80-42/70