Add 21/36 and 7/10
21/36 + 7/10 is 77/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 10 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Likewise, for the 2nd fraction, since 10 × 18 = 180,
7/10 = 7 × 18/10 × 18 = 126/180 - Add the two like fractions:
105/180 + 126/180 = 105 + 126/180 = 231/180 - 231/180 simplified gives 77/60
- So, 21/36 + 7/10 = 77/60
In mixed form: 117/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/36+7/10 21/36+14/10 21/72+7/10 21/36+7/20 63/36+7/10 21/36+21/10 21/36+7/30 21/36+35/10 21/36+7/50 21/36+49/10 21/36+7/70