Add 9/42 and 5/15
9/42 + 5/15 is 23/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
9/42 = 9 × 5/42 × 5 = 45/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
5/15 = 5 × 14/15 × 14 = 70/210 - Add the two like fractions:
45/210 + 70/210 = 45 + 70/210 = 115/210 - 115/210 simplified gives 23/42
- So, 9/42 + 5/15 = 23/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42+5/15 9/42+10/15 9/84+5/15 9/42+5/30 27/42+5/15 9/42+5/45 45/42+5/15 9/42+25/15 9/42+5/75 63/42+5/15 9/42+35/15