Subtract 70/16 from 20/49
1st number: 20/49, 2nd number: 4 6/16
20/49 - 70/16 is -1555/392.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 16 is 784
Next, find the equivalent fraction of both fractional numbers with denominator 784 - For the 1st fraction, since 49 × 16 = 784,
20/49 = 20 × 16/49 × 16 = 320/784 - Likewise, for the 2nd fraction, since 16 × 49 = 784,
70/16 = 70 × 49/16 × 49 = 3430/784 - Subtract the two like fractions:
320/784 - 3430/784 = 320 - 3430/784 = -3110/784 - After reducing the fraction, the answer is -1555/392
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/49-70/16 20/98-70/16 20/49-70/32 60/49-70/16 20/49-70/48 20/49-70/80