Add 21/98 and 90/4
1st number: 21/98, 2nd number: 22 2/4
21/98 + 90/4 is 159/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 4 is 196
Next, find the equivalent fraction of both fractional numbers with denominator 196 - For the 1st fraction, since 98 × 2 = 196,
21/98 = 21 × 2/98 × 2 = 42/196 - Likewise, for the 2nd fraction, since 4 × 49 = 196,
90/4 = 90 × 49/4 × 49 = 4410/196 - Add the two like fractions:
42/196 + 4410/196 = 42 + 4410/196 = 4452/196 - 4452/196 simplified gives 159/7
- So, 21/98 + 90/4 = 159/7
In mixed form: 225/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98+90/4 21/98+90/8 63/98+90/4 21/98+90/12 21/98+90/20 21/98+90/28