Subtract 70/80 from 3/56
3/56 - 70/80 is -23/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 56 × 10 = 560,
3/56 = 3 × 10/56 × 10 = 30/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
70/80 = 70 × 7/80 × 7 = 490/560 - Subtract the two like fractions:
30/560 - 490/560 = 30 - 490/560 = -460/560 - After reducing the fraction, the answer is -23/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/56-70/80 9/56-70/80 15/56-70/80 21/56-70/80