Subtract 18/32 from 90/30
1st number: 3 0/30, 2nd number: 18/32
90/30 - 18/32 is 39/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 32 is 480
Next, find the equivalent fraction of both fractional numbers with denominator 480 - For the 1st fraction, since 30 × 16 = 480,
90/30 = 90 × 16/30 × 16 = 1440/480 - Likewise, for the 2nd fraction, since 32 × 15 = 480,
18/32 = 18 × 15/32 × 15 = 270/480 - Subtract the two like fractions:
1440/480 - 270/480 = 1440 - 270/480 = 1170/480 - After reducing the fraction, the answer is 39/16
- In mixed form: 27/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30-36/32 90/60-18/32 90/30-18/64 90/30-54/32 90/30-18/96 90/30-90/32