Subtract 20/16 from 49/45
1st number: 1 4/45, 2nd number: 1 4/16
49/45 - 20/16 is -29/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
49/45 = 49 × 16/45 × 16 = 784/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
20/16 = 20 × 45/16 × 45 = 900/720 - Subtract the two like fractions:
784/720 - 900/720 = 784 - 900/720 = -116/720 - After reducing the fraction, the answer is -29/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/45-20/16 49/45-40/16 49/90-20/16 49/45-20/32 49/45-60/16 49/45-20/48 49/45-20/80