Add 5/12 and 42/90
5/12 + 42/90 is 53/60.
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,
5/12 = 5 × 15/12 × 15 = 75/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
42/90 = 42 × 2/90 × 2 = 84/180 - Add the two like fractions:
75/180 + 84/180 = 75 + 84/180 = 159/180 - 159/180 simplified gives 53/60
- So, 5/12 + 42/90 = 53/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/12+42/90 5/12+84/90 5/24+42/90 15/12+42/90 5/36+42/90 25/12+42/90 5/60+42/90 35/12+42/90 5/84+42/90