Add 84/60 and 63/90
1st number: 1 24/60, 2nd number: 63/90
84/60 + 63/90 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
84/60 = 84 × 3/60 × 3 = 252/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
63/90 = 63 × 2/90 × 2 = 126/180 - Add the two like fractions:
252/180 + 126/180 = 252 + 126/180 = 378/180 - 378/180 simplified gives 21/10
- So, 84/60 + 63/90 = 21/10
In mixed form: 21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: