Add 63/4 and 27/90
1st number: 15 3/4, 2nd number: 27/90
63/4 + 27/90 is 321/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
63/4 = 63 × 45/4 × 45 = 2835/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
27/90 = 27 × 2/90 × 2 = 54/180 - Add the two like fractions:
2835/180 + 54/180 = 2835 + 54/180 = 2889/180 - 2889/180 simplified gives 321/20
- So, 63/4 + 27/90 = 321/20
In mixed form: 161/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/4+54/90 63/8+27/90 63/4+81/90 63/12+27/90 63/20+27/90 63/28+27/90