Add 42/12 and 28/4
1st number: 3 6/12, 2nd number: 7 0/4
42/12 + 28/4 is 21/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 4 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 12 × 1 = 12,
42/12 = 42 × 1/12 × 1 = 42/12 - Likewise, for the 2nd fraction, since 4 × 3 = 12,
28/4 = 28 × 3/4 × 3 = 84/12 - Add the two like fractions:
42/12 + 84/12 = 42 + 84/12 = 126/12 - 126/12 simplified gives 21/2
- So, 42/12 + 28/4 = 21/2
In mixed form: 101/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+28/4 42/12+56/4 42/24+28/4 42/12+28/8 42/12+84/4 42/36+28/4 42/12+28/12 42/60+28/4 42/12+28/20 42/84+28/4