Subtract 9/90 from 30/50
30/50 - 9/90 is 1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
30/50 = 30 × 9/50 × 9 = 270/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
9/90 = 9 × 5/90 × 5 = 45/450 - Subtract the two like fractions:
270/450 - 45/450 = 270 - 45/450 = 225/450 - After reducing the fraction, the answer is 1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/50-9/90 30/50-18/90 90/50-9/90 30/50-27/90 30/50-45/90 30/50-63/90