Subtract 90/56 from 42/98
1st number: 42/98, 2nd number: 1 34/56
42/98 - 90/56 is -33/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 56 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 98 × 4 = 392,
42/98 = 42 × 4/98 × 4 = 168/392 - Likewise, for the 2nd fraction, since 56 × 7 = 392,
90/56 = 90 × 7/56 × 7 = 630/392 - Subtract the two like fractions:
168/392 - 630/392 = 168 - 630/392 = -462/392 - After reducing the fraction, the answer is -33/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/98-90/56