Subtract 50/90 from 4/12
4/12 - 50/90 is -2/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
4/12 = 4 × 15/12 × 15 = 60/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
50/90 = 50 × 2/90 × 2 = 100/180 - Subtract the two like fractions:
60/180 - 100/180 = 60 - 100/180 = -40/180 - After reducing the fraction, the answer is -2/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/12-50/90 4/24-50/90 4/36-50/90 20/12-50/90 4/60-50/90 28/12-50/90 4/84-50/90