Subtract 4/14 from 18/80
18/80 - 4/14 is -17/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 14 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
18/80 = 18 × 7/80 × 7 = 126/560 - Likewise, for the 2nd fraction, since 14 × 40 = 560,
4/14 = 4 × 40/14 × 40 = 160/560 - Subtract the two like fractions:
126/560 - 160/560 = 126 - 160/560 = -34/560 - After reducing the fraction, the answer is -17/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/80-4/14 18/80-8/14 18/80-4/28 54/80-4/14 18/80-12/14 18/80-4/42 90/80-4/14 18/80-20/14 18/80-4/70 18/80-28/14 18/80-4/98