Add 42/12 and 90/24
1st number: 3 6/12, 2nd number: 3 18/24
42/12 + 90/24 is 29/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 24 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 12 × 2 = 24,
42/12 = 42 × 2/12 × 2 = 84/24 - Likewise, for the 2nd fraction, since 24 × 1 = 24,
90/24 = 90 × 1/24 × 1 = 90/24 - Add the two like fractions:
84/24 + 90/24 = 84 + 90/24 = 174/24 - 174/24 simplified gives 29/4
- So, 42/12 + 90/24 = 29/4
In mixed form: 71/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12+90/24 42/24+90/24 42/12+90/48 42/36+90/24 42/12+90/72 42/60+90/24 42/84+90/24