Add 42/12 and 84/16
1st number: 3 6/12, 2nd number: 5 4/16
42/12 + 84/16 is 35/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 16 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 12 × 4 = 48,
42/12 = 42 × 4/12 × 4 = 168/48 - Likewise, for the 2nd fraction, since 16 × 3 = 48,
84/16 = 84 × 3/16 × 3 = 252/48 - Add the two like fractions:
168/48 + 252/48 = 168 + 252/48 = 420/48 - 420/48 simplified gives 35/4
- So, 42/12 + 84/16 = 35/4
In mixed form: 83/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+84/16 42/24+84/16 42/12+84/32 42/36+84/16 42/12+84/48 42/60+84/16 42/12+84/80 42/84+84/16