Subtract 12/80 from 16/18, Solve 16/18

Subtract 12/80 from 16/18

16/18 - 12/80 is 133/180.

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,
16/18 = 16 × 40/18 × 40 = 640/720
Likewise, for the 2nd fraction, since 80 × 9 = 720,
12/80 = 12 × 9/80 × 9 = 108/720
Subtract the two like fractions:
640/720 - 108/720 = 640 - 108/720 = 532/720
After reducing the fraction, the answer is 133/180

MathStep (Works offline)

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