Subtract 18/12 from 90/48
1st number: 1 42/48, 2nd number: 1 6/12
90/48 - 18/12 is 3/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 12 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 48 × 1 = 48,
90/48 = 90 × 1/48 × 1 = 90/48 - Likewise, for the 2nd fraction, since 12 × 4 = 48,
18/12 = 18 × 4/12 × 4 = 72/48 - Subtract the two like fractions:
90/48 - 72/48 = 90 - 72/48 = 18/48 - After reducing the fraction, the answer is 3/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/48-36/12 90/96-18/12 90/48-18/24 90/48-54/12 90/48-18/36 90/48-90/12 90/48-18/60 90/48-18/84