Subtract 63/70 from 72/28
1st number: 2 16/28, 2nd number: 63/70
72/28 - 63/70 is 117/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
72/28 = 72 × 5/28 × 5 = 360/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
63/70 = 63 × 2/70 × 2 = 126/140 - Subtract the two like fractions:
360/140 - 126/140 = 360 - 126/140 = 234/140 - After reducing the fraction, the answer is 117/70
- In mixed form: 147/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/56-63/70 72/84-63/70