Subtract 27/3 from 40/90
1st number: 40/90, 2nd number: 9 0/3
40/90 - 27/3 is -77/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 3 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
40/90 = 40 × 1/90 × 1 = 40/90 - Likewise, for the 2nd fraction, since 3 × 30 = 90,
27/3 = 27 × 30/3 × 30 = 810/90 - Subtract the two like fractions:
40/90 - 810/90 = 40 - 810/90 = -770/90 - After reducing the fraction, the answer is -77/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90-27/3 40/90-54/3 40/90-27/6 40/90-81/3 40/90-27/9 40/90-27/15 40/90-27/21