Subtract 12/10 from 40/72
1st number: 40/72, 2nd number: 1 2/10
40/72 - 12/10 is -29/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 10 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 10 × 36 = 360,
12/10 = 12 × 36/10 × 36 = 432/360 - Subtract the two like fractions:
200/360 - 432/360 = 200 - 432/360 = -232/360 - After reducing the fraction, the answer is -29/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/72-12/10 40/72-24/10 40/72-12/20 40/72-36/10 40/72-12/30 40/72-60/10 40/72-12/50 40/72-84/10 40/72-12/70