Add 42/2 and 9/15
1st number: 21 0/2, 2nd number: 9/15
42/2 + 9/15 is 108/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 2 × 15 = 30,
42/2 = 42 × 15/2 × 15 = 630/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
9/15 = 9 × 2/15 × 2 = 18/30 - Add the two like fractions:
630/30 + 18/30 = 630 + 18/30 = 648/30 - 648/30 simplified gives 108/5
- So, 42/2 + 9/15 = 108/5
In mixed form: 213/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2+9/15 42/2+18/15 42/4+9/15 42/2+9/30 42/2+27/15 42/6+9/15 42/2+9/45 42/2+45/15 42/10+9/15 42/2+9/75 42/2+63/15 42/14+9/15