Subtract 2/80 from 40/7, Solve 5 5/7

Subtract 2/80 from 40/7

1^st number: 5 5/7, 2^nd number: 2/80

40/7 - 2/80 is 1593/280.

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,
2/80 = 2 × 7/80 × 7 = 14/560
Subtract the two like fractions:
3200/560 - 14/560 = 3200 - 14/560 = 3186/560
After reducing the fraction, the answer is 1593/280
In mixed form: 5193/280

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad