Subtract 49/45 from 90/12
1st number: 7 6/12, 2nd number: 1 4/45
90/12 - 49/45 is 577/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
90/12 = 90 × 15/12 × 15 = 1350/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
49/45 = 49 × 4/45 × 4 = 196/180 - Subtract the two like fractions:
1350/180 - 196/180 = 1350 - 196/180 = 1154/180 - After reducing the fraction, the answer is 577/90
- In mixed form: 637/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12-98/45 90/24-49/45 90/12-49/90 90/36-49/45 90/60-49/45 90/84-49/45