Subtract 42/28 from 90/98
1st number: 90/98, 2nd number: 1 14/28
90/98 - 42/28 is -57/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 28 is 196
Next, find the equivalent fraction of both fractional numbers with denominator 196 - For the 1st fraction, since 98 × 2 = 196,
90/98 = 90 × 2/98 × 2 = 180/196 - Likewise, for the 2nd fraction, since 28 × 7 = 196,
42/28 = 42 × 7/28 × 7 = 294/196 - Subtract the two like fractions:
180/196 - 294/196 = 180 - 294/196 = -114/196 - After reducing the fraction, the answer is -57/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/98-84/28 90/98-42/56 90/98-42/84