Add 9/36 and 15/42
9/36 + 15/42 is 17/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 42 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
9/36 = 9 × 7/36 × 7 = 63/252 - Likewise, for the 2nd fraction, since 42 × 6 = 252,
15/42 = 15 × 6/42 × 6 = 90/252 - Add the two like fractions:
63/252 + 90/252 = 63 + 90/252 = 153/252 - 153/252 simplified gives 17/28
- So, 9/36 + 15/42 = 17/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/36+15/42 9/36+30/42 9/72+15/42 9/36+15/84 27/36+15/42 9/36+45/42 45/36+15/42 9/36+75/42 63/36+15/42