Subtract 14/30 from 18/45
18/45 - 14/30 is -1/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
18/45 = 18 × 2/45 × 2 = 36/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
14/30 = 14 × 3/30 × 3 = 42/90 - Subtract the two like fractions:
36/90 - 42/90 = 36 - 42/90 = -6/90 - After reducing the fraction, the answer is -1/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/45-14/30 18/45-28/30 18/90-14/30 18/45-14/60 54/45-14/30 18/45-42/30 18/45-14/90 90/45-14/30 18/45-70/30 18/45-98/30