Add 5/4 and 42/12
1st number: 1 1/4, 2nd number: 3 6/12
5/4 + 42/12 is 19/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 4 × 3 = 12,
5/4 = 5 × 3/4 × 3 = 15/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
42/12 = 42 × 1/12 × 1 = 42/12 - Add the two like fractions:
15/12 + 42/12 = 15 + 42/12 = 57/12 - 57/12 simplified gives 19/4
- So, 5/4 + 42/12 = 19/4
In mixed form: 43/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/4+42/12 5/4+84/12 5/8+42/12 5/4+42/24 15/4+42/12 5/12+42/12 5/4+42/36 25/4+42/12 5/20+42/12 5/4+42/60 35/4+42/12 5/28+42/12 5/4+42/84