Add 84/45 and 21/36
1st number: 1 39/45, 2nd number: 21/36
84/45 + 21/36 is 49/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
84/45 = 84 × 4/45 × 4 = 336/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Add the two like fractions:
336/180 + 105/180 = 336 + 105/180 = 441/180 - 441/180 simplified gives 49/20
- So, 84/45 + 21/36 = 49/20
In mixed form: 29/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+42/36 84/90+21/36 84/45+21/72 84/45+63/36