Subtract 30/18 from 72/49
1st number: 1 23/49, 2nd number: 1 12/18
72/49 - 30/18 is -29/147.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 18 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 49 × 18 = 882,
72/49 = 72 × 18/49 × 18 = 1296/882 - Likewise, for the 2nd fraction, since 18 × 49 = 882,
30/18 = 30 × 49/18 × 49 = 1470/882 - Subtract the two like fractions:
1296/882 - 1470/882 = 1296 - 1470/882 = -174/882 - After reducing the fraction, the answer is -29/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/49-60/18 72/98-30/18 72/49-30/36 72/49-90/18 72/49-30/54 72/49-30/90