Subtract 14/20 from 10/45
10/45 - 14/20 is -43/90.
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,
10/45 = 10 × 4/45 × 4 = 40/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
14/20 = 14 × 9/20 × 9 = 126/180 - Subtract the two like fractions:
40/180 - 126/180 = 40 - 126/180 = -86/180 - After reducing the fraction, the answer is -43/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/45-14/20 10/45-28/20 10/90-14/20 10/45-14/40 30/45-14/20 10/45-42/20 10/45-14/60 50/45-14/20 10/45-70/20 70/45-14/20 10/45-98/20