Subtract 18/80 from 40/7
1st number: 5 5/7, 2nd number: 18/80
40/7 - 18/80 is 1537/280.
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,
40/7 = 40 × 80/7 × 80 = 3200/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
18/80 = 18 × 7/80 × 7 = 126/560 - Subtract the two like fractions:
3200/560 - 126/560 = 3200 - 126/560 = 3074/560 - After reducing the fraction, the answer is 1537/280
- In mixed form: 5137/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7-18/80 40/7-36/80 40/14-18/80 40/7-54/80 40/21-18/80 40/7-90/80 40/35-18/80 40/49-18/80