Subtract 1/7 from 45/80
45/80 - 1/7 is 47/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 7 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
45/80 = 45 × 7/80 × 7 = 315/560 - Likewise, for the 2nd fraction, since 7 × 80 = 560,
1/7 = 1 × 80/7 × 80 = 80/560 - Subtract the two like fractions:
315/560 - 80/560 = 315 - 80/560 = 235/560 - After reducing the fraction, the answer is 47/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80-1/7 45/80-2/7 45/80-1/14 45/80-3/7 45/80-1/21 45/80-5/7 45/80-1/35 45/80-1/49