Subtract 80/9 from 2/80, Solve 2/80

Subtract 80/9 from 2/80

1^st number: 2/80, 2^nd number: 8 8/9

2/80 - 80/9 is -3191/360.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 80 × 9 = 720,
2/80 = 2 × 9/80 × 9 = 18/720
Likewise, for the 2nd fraction, since 9 × 80 = 720,
80/9 = 80 × 80/9 × 80 = 6400/720
Subtract the two like fractions:
18/720 - 6400/720 = 18 - 6400/720 = -6382/720
After reducing the fraction, the answer is -3191/360

MathStep (Works offline)

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