Subtract 60/80 from 16/45
16/45 - 60/80 is -71/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
16/45 = 16 × 16/45 × 16 = 256/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
60/80 = 60 × 9/80 × 9 = 540/720 - Subtract the two like fractions:
256/720 - 540/720 = 256 - 540/720 = -284/720 - After reducing the fraction, the answer is -71/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/45-60/80 16/90-60/80 48/45-60/80 80/45-60/80