Subtract 18/48 from 90/42
1st number: 2 6/42, 2nd number: 18/48
90/42 - 18/48 is 99/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
90/42 = 90 × 8/42 × 8 = 720/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
18/48 = 18 × 7/48 × 7 = 126/336 - Subtract the two like fractions:
720/336 - 126/336 = 720 - 126/336 = 594/336 - After reducing the fraction, the answer is 99/56
- In mixed form: 143/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42-36/48 90/84-18/48 90/42-18/96 90/42-54/48 90/42-90/48