Subtract 18/16 from 3/45
1st number: 3/45, 2nd number: 1 2/16
3/45 - 18/16 is -127/120.
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,
3/45 = 3 × 16/45 × 16 = 48/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
18/16 = 18 × 45/16 × 45 = 810/720 - Subtract the two like fractions:
48/720 - 810/720 = 48 - 810/720 = -762/720 - After reducing the fraction, the answer is -127/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/45-18/16 3/45-36/16 3/90-18/16 3/45-18/32 9/45-18/16 3/45-54/16 3/45-18/48 15/45-18/16 3/45-90/16 3/45-18/80 21/45-18/16