Subtract 80/45 from 42/16
1st number: 2 10/16, 2nd number: 1 35/45
42/16 - 80/45 is 61/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
42/16 = 42 × 45/16 × 45 = 1890/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
80/45 = 80 × 16/45 × 16 = 1280/720 - Subtract the two like fractions:
1890/720 - 1280/720 = 1890 - 1280/720 = 610/720 - After reducing the fraction, the answer is 61/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/16-80/45 42/32-80/45 42/16-80/90 42/48-80/45 42/80-80/45