Add 84/63 and 27/90
1st number: 1 21/63, 2nd number: 27/90
84/63 + 27/90 is 49/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
84/63 = 84 × 10/63 × 10 = 840/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
27/90 = 27 × 7/90 × 7 = 189/630 - Add the two like fractions:
840/630 + 189/630 = 840 + 189/630 = 1029/630 - 1029/630 simplified gives 49/30
- So, 84/63 + 27/90 = 49/30
In mixed form: 119/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+54/90 84/63+81/90