Subtract 70/63 from 9/28
1st number: 9/28, 2nd number: 1 7/63
9/28 - 70/63 is -199/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
9/28 = 9 × 9/28 × 9 = 81/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
70/63 = 70 × 4/63 × 4 = 280/252 - Subtract the two like fractions:
81/252 - 280/252 = 81 - 280/252 = -199/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28-70/63 9/56-70/63 27/28-70/63 9/84-70/63 45/28-70/63 63/28-70/63