Subtract 14/20 from 3/45
3/45 - 14/20 is -19/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
3/45 = 3 × 4/45 × 4 = 12/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
14/20 = 14 × 9/20 × 9 = 126/180 - Subtract the two like fractions:
12/180 - 126/180 = 12 - 126/180 = -114/180 - After reducing the fraction, the answer is -19/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/45-14/20 3/45-28/20 3/90-14/20 3/45-14/40 9/45-14/20 3/45-42/20 3/45-14/60 15/45-14/20 3/45-70/20 21/45-14/20 3/45-98/20