Add 16/12 and 42/90
1st number: 1 4/12, 2nd number: 42/90
16/12 + 42/90 is 9/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
16/12 = 16 × 15/12 × 15 = 240/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
42/90 = 42 × 2/90 × 2 = 84/180 - Add the two like fractions:
240/180 + 84/180 = 240 + 84/180 = 324/180 - 324/180 simplified gives 9/5
- So, 16/12 + 42/90 = 9/5
In mixed form: 14/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/12+42/90 16/12+84/90 16/24+42/90 48/12+42/90 16/36+42/90 80/12+42/90 16/60+42/90 16/84+42/90