Add 3/36 and 25/21
1st number: 3/36, 2nd number: 1 4/21
3/36 + 25/21 is 107/84.
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,
3/36 = 3 × 7/36 × 7 = 21/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
25/21 = 25 × 12/21 × 12 = 300/252 - Add the two like fractions:
21/252 + 300/252 = 21 + 300/252 = 321/252 - 321/252 simplified gives 107/84
- So, 3/36 + 25/21 = 107/84
In mixed form: 123/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/36+25/21 3/36+50/21 3/72+25/21 3/36+25/42 9/36+25/21 3/36+75/21 3/36+25/63 15/36+25/21 21/36+25/21