Subtract 16/18 from 30/50
30/50 - 16/18 is -13/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 18 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 18 × 25 = 450,
16/18 = 16 × 25/18 × 25 = 400/450 - Subtract the two like fractions:
270/450 - 400/450 = 270 - 400/450 = -130/450 - After reducing the fraction, the answer is -13/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/50-16/18 30/50-32/18 30/50-16/36 90/50-16/18 30/50-48/18 30/50-16/54 30/50-80/18 30/50-16/90