Subtract 70/14 from 40/80
1st number: 40/80, 2nd number: 5 0/14
40/80 - 70/14 is -9/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 14 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
40/80 = 40 × 7/80 × 7 = 280/560 - Likewise, for the 2nd fraction, since 14 × 40 = 560,
70/14 = 70 × 40/14 × 40 = 2800/560 - Subtract the two like fractions:
280/560 - 2800/560 = 280 - 2800/560 = -2520/560 - After reducing the fraction, the answer is -9/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/80-70/28 40/80-70/42 40/80-70/98