Add 42/2 and 3/12
1st number: 21 0/2, 2nd number: 3/12
42/2 + 3/12 is 85/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 2 × 6 = 12,
42/2 = 42 × 6/2 × 6 = 252/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
3/12 = 3 × 1/12 × 1 = 3/12 - Add the two like fractions:
252/12 + 3/12 = 252 + 3/12 = 255/12 - 255/12 simplified gives 85/4
- So, 42/2 + 3/12 = 85/4
In mixed form: 211/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2+3/12 42/2+6/12 42/4+3/12 42/2+3/24 42/2+9/12 42/6+3/12 42/2+3/36 42/2+15/12 42/10+3/12 42/2+3/60 42/2+21/12 42/14+3/12 42/2+3/84