Add 45/42 and 7/15
1st number: 1 3/42, 2nd number: 7/15
45/42 + 7/15 is 323/210.
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,
45/42 = 45 × 5/42 × 5 = 225/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
7/15 = 7 × 14/15 × 14 = 98/210 - Add the two like fractions:
225/210 + 98/210 = 225 + 98/210 = 323/210 - So, 45/42 + 7/15 = 323/210
In mixed form: 1113/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42+7/15 45/42+14/15 45/84+7/15 45/42+7/30 45/42+21/15 45/42+7/45 45/42+35/15 45/42+7/75 45/42+49/15