Subtract 80/28 from 70/63
1st number: 1 7/63, 2nd number: 2 24/28
70/63 - 80/28 is -110/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
70/63 = 70 × 4/63 × 4 = 280/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
80/28 = 80 × 9/28 × 9 = 720/252 - Subtract the two like fractions:
280/252 - 720/252 = 280 - 720/252 = -440/252 - After reducing the fraction, the answer is -110/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/63-80/56 70/63-80/84