Add 84/28 and 63/90
1st number: 3 0/28, 2nd number: 63/90
84/28 + 63/90 is 37/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
84/28 = 84 × 45/28 × 45 = 3780/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
63/90 = 63 × 14/90 × 14 = 882/1260 - Add the two like fractions:
3780/1260 + 882/1260 = 3780 + 882/1260 = 4662/1260 - 4662/1260 simplified gives 37/10
- So, 84/28 + 63/90 = 37/10
In mixed form: 37/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+63/90