Subtract 63/12 from 4/90
1st number: 4/90, 2nd number: 5 3/12
4/90 - 63/12 is -937/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
4/90 = 4 × 2/90 × 2 = 8/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
63/12 = 63 × 15/12 × 15 = 945/180 - Subtract the two like fractions:
8/180 - 945/180 = 8 - 945/180 = -937/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/90-63/12 4/90-63/24 12/90-63/12 4/90-63/36 20/90-63/12 4/90-63/60 28/90-63/12 4/90-63/84