Add 10/36 and 30/21
1st number: 10/36, 2nd number: 1 9/21
10/36 + 30/21 is 215/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
10/36 = 10 × 7/36 × 7 = 70/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
30/21 = 30 × 12/21 × 12 = 360/252 - Add the two like fractions:
70/252 + 360/252 = 70 + 360/252 = 430/252 - 430/252 simplified gives 215/126
- So, 10/36 + 30/21 = 215/126
In mixed form: 189/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/36+30/21 10/36+60/21 10/72+30/21 10/36+30/42 30/36+30/21 10/36+90/21 10/36+30/63 50/36+30/21 70/36+30/21