Add 42/45 and 24/12
1st number: 42/45, 2nd number: 2 0/12
42/45 + 24/12 is 44/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
42/45 = 42 × 4/45 × 4 = 168/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
24/12 = 24 × 15/12 × 15 = 360/180 - Add the two like fractions:
168/180 + 360/180 = 168 + 360/180 = 528/180 - 528/180 simplified gives 44/15
- So, 42/45 + 24/12 = 44/15
In mixed form: 214/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+24/12 42/45+48/12 42/90+24/12 42/45+72/12 42/45+24/36 42/45+24/60 42/45+24/84