Subtract 70/18 from 16/28
1st number: 16/28, 2nd number: 3 16/18
16/28 - 70/18 is -209/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
16/28 = 16 × 9/28 × 9 = 144/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
70/18 = 70 × 14/18 × 14 = 980/252 - Subtract the two like fractions:
144/252 - 980/252 = 144 - 980/252 = -836/252 - After reducing the fraction, the answer is -209/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/28-70/18 16/56-70/18 16/28-70/36 48/28-70/18 16/84-70/18 16/28-70/54 80/28-70/18 16/28-70/90