Subtract 70/49 from 18/16
1st number: 1 2/16, 2nd number: 1 21/49
18/16 - 70/49 is -17/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 49 is 784
Next, find the equivalent fraction of both fractional numbers with denominator 784 - For the 1st fraction, since 16 × 49 = 784,
18/16 = 18 × 49/16 × 49 = 882/784 - Likewise, for the 2nd fraction, since 49 × 16 = 784,
70/49 = 70 × 16/49 × 16 = 1120/784 - Subtract the two like fractions:
882/784 - 1120/784 = 882 - 1120/784 = -238/784 - After reducing the fraction, the answer is -17/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/16-70/49 18/32-70/49 18/16-70/98 54/16-70/49 18/48-70/49 90/16-70/49 18/80-70/49