Subtract 7/90 from 75/12
1st number: 6 3/12, 2nd number: 7/90
75/12 - 7/90 is 1111/180.
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,
75/12 = 75 × 15/12 × 15 = 1125/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
7/90 = 7 × 2/90 × 2 = 14/180 - Subtract the two like fractions:
1125/180 - 14/180 = 1125 - 14/180 = 1111/180 - In mixed form: 631/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/12-14/90 75/24-7/90 75/12-21/90 75/36-7/90 75/12-35/90 75/60-7/90 75/12-49/90 75/84-7/90