Subtract 8/80 from 60/18, Solve 3 6/18

Subtract 8/80 from 60/18

1^st number: 3 6/18, 2^nd number: 8/80

60/18 - 8/80 is 97/30.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 18 × 40 = 720,
60/18 = 60 × 40/18 × 40 = 2400/720
Likewise, for the 2nd fraction, since 80 × 9 = 720,
8/80 = 8 × 9/80 × 9 = 72/720
Subtract the two like fractions:
2400/720 - 72/720 = 2400 - 72/720 = 2328/720
After reducing the fraction, the answer is 97/30
In mixed form: 37/30

MathStep (Works offline)

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