Subtract 70/5 from 40/72
1st number: 40/72, 2nd number: 14 0/5
40/72 - 70/5 is -121/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 5 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
40/72 = 40 × 5/72 × 5 = 200/360 - Likewise, for the 2nd fraction, since 5 × 72 = 360,
70/5 = 70 × 72/5 × 72 = 5040/360 - Subtract the two like fractions:
200/360 - 5040/360 = 200 - 5040/360 = -4840/360 - After reducing the fraction, the answer is -121/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/72-70/5 40/72-70/10 40/72-70/15 40/72-70/25 40/72-70/35