Add 12/4 and 20/30
1st number: 3 0/4, 2nd number: 20/30
12/4 + 20/30 is 11/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
12/4 = 12 × 15/4 × 15 = 180/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
20/30 = 20 × 2/30 × 2 = 40/60 - Add the two like fractions:
180/60 + 40/60 = 180 + 40/60 = 220/60 - 220/60 simplified gives 11/3
- So, 12/4 + 20/30 = 11/3
In mixed form: 32/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/4+20/30 12/4+40/30 12/8+20/30 12/4+20/60 36/4+20/30 12/4+60/30 12/4+20/90 60/4+20/30 12/20+20/30 84/4+20/30 12/28+20/30