Add 21/30 and 56/36
1st number: 21/30, 2nd number: 1 20/36
21/30 + 56/36 is 203/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 30 × 6 = 180,
21/30 = 21 × 6/30 × 6 = 126/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
56/36 = 56 × 5/36 × 5 = 280/180 - Add the two like fractions:
126/180 + 280/180 = 126 + 280/180 = 406/180 - 406/180 simplified gives 203/90
- So, 21/30 + 56/36 = 203/90
In mixed form: 223/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/30+56/36 21/60+56/36 21/30+56/72 63/30+56/36 21/90+56/36