Add 42/12 and 6/90
1st number: 3 6/12, 2nd number: 6/90
42/12 + 6/90 is 107/30.
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,
42/12 = 42 × 15/12 × 15 = 630/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
6/90 = 6 × 2/90 × 2 = 12/180 - Add the two like fractions:
630/180 + 12/180 = 630 + 12/180 = 642/180 - 642/180 simplified gives 107/30
- So, 42/12 + 6/90 = 107/30
In mixed form: 317/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+6/90 42/12+12/90 42/24+6/90 42/12+18/90 42/36+6/90 42/12+30/90 42/60+6/90 42/12+42/90 42/84+6/90