Subtract 49/12 from 90/30
1st number: 3 0/30, 2nd number: 4 1/12
90/30 - 49/12 is -13/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
90/30 = 90 × 2/30 × 2 = 180/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
49/12 = 49 × 5/12 × 5 = 245/60 - Subtract the two like fractions:
180/60 - 245/60 = 180 - 245/60 = -65/60 - After reducing the fraction, the answer is -13/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30-98/12 90/60-49/12 90/30-49/24 90/30-49/36 90/30-49/60 90/30-49/84