Subtract 20/49 from 30/18
1st number: 1 12/18, 2nd number: 20/49
30/18 - 20/49 is 185/147.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 49 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 18 × 49 = 882,
30/18 = 30 × 49/18 × 49 = 1470/882 - Likewise, for the 2nd fraction, since 49 × 18 = 882,
20/49 = 20 × 18/49 × 18 = 360/882 - Subtract the two like fractions:
1470/882 - 360/882 = 1470 - 360/882 = 1110/882 - After reducing the fraction, the answer is 185/147
- In mixed form: 138/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18-20/49 30/18-40/49 30/36-20/49 30/18-20/98 90/18-20/49 30/18-60/49 30/54-20/49 30/90-20/49