Subtract 1/9 from 40/72
40/72 - 1/9 is 4/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
40/72 = 40 × 1/72 × 1 = 40/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
1/9 = 1 × 8/9 × 8 = 8/72 - Subtract the two like fractions:
40/72 - 8/72 = 40 - 8/72 = 32/72 - After reducing the fraction, the answer is 4/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/72-1/9 40/72-2/9 40/72-1/18 40/72-3/9 40/72-1/27 40/72-5/9 40/72-1/45 40/72-7/9 40/72-1/63