Subtract 32/90 from 18/30
18/30 - 32/90 is 11/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
18/30 = 18 × 3/30 × 3 = 54/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
32/90 = 32 × 1/90 × 1 = 32/90 - Subtract the two like fractions:
54/90 - 32/90 = 54 - 32/90 = 22/90 - After reducing the fraction, the answer is 11/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30-32/90 18/30-64/90 18/60-32/90 54/30-32/90 18/30-96/90 18/90-32/90 90/30-32/90