Subtract 40/75 from 9/30
9/30 - 40/75 is -7/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 75 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 30 × 5 = 150,
9/30 = 9 × 5/30 × 5 = 45/150 - Likewise, for the 2nd fraction, since 75 × 2 = 150,
40/75 = 40 × 2/75 × 2 = 80/150 - Subtract the two like fractions:
45/150 - 80/150 = 45 - 80/150 = -35/150 - After reducing the fraction, the answer is -7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/30-40/75 9/30-80/75 9/60-40/75 27/30-40/75 9/90-40/75 45/30-40/75 63/30-40/75