Add 63/90 and 63/84
63/90 + 63/84 is 29/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
63/90 = 63 × 14/90 × 14 = 882/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
63/84 = 63 × 15/84 × 15 = 945/1260 - Add the two like fractions:
882/1260 + 945/1260 = 882 + 945/1260 = 1827/1260 - 1827/1260 simplified gives 29/20
- So, 63/90 + 63/84 = 29/20
In mixed form: 19/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: