Subtract 1/80 from 16/90
16/90 - 1/80 is 119/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
16/90 = 16 × 8/90 × 8 = 128/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
1/80 = 1 × 9/80 × 9 = 9/720 - Subtract the two like fractions:
128/720 - 9/720 = 128 - 9/720 = 119/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/90-1/80 16/90-2/80 48/90-1/80 16/90-3/80 80/90-1/80 16/90-5/80 16/90-7/80