Subtract 42/32 from 90/28
1st number: 3 6/28, 2nd number: 1 10/32
90/28 - 42/32 is 213/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 32 is 224
Next, find the equivalent fraction of both fractional numbers with denominator 224 - For the 1st fraction, since 28 × 8 = 224,
90/28 = 90 × 8/28 × 8 = 720/224 - Likewise, for the 2nd fraction, since 32 × 7 = 224,
42/32 = 42 × 7/32 × 7 = 294/224 - Subtract the two like fractions:
720/224 - 294/224 = 720 - 294/224 = 426/224 - After reducing the fraction, the answer is 213/112
- In mixed form: 1101/112
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28-84/32 90/56-42/32 90/28-42/64 90/84-42/32 90/28-42/96