Add 7/63 and 90/21
1st number: 7/63, 2nd number: 4 6/21
7/63 + 90/21 is 277/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
7/63 = 7 × 1/63 × 1 = 7/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
90/21 = 90 × 3/21 × 3 = 270/63 - Add the two like fractions:
7/63 + 270/63 = 7 + 270/63 = 277/63 - So, 7/63 + 90/21 = 277/63
In mixed form: 425/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/63+90/21 7/63+90/42 21/63+90/21 7/63+90/63 35/63+90/21 49/63+90/21