Add 30/20 and 12/40
1st number: 1 10/20, 2nd number: 12/40
30/20 + 12/40 is 9/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
30/20 = 30 × 2/20 × 2 = 60/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
12/40 = 12 × 1/40 × 1 = 12/40 - Add the two like fractions:
60/40 + 12/40 = 60 + 12/40 = 72/40 - 72/40 simplified gives 9/5
- So, 30/20 + 12/40 = 9/5
In mixed form: 14/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/20+12/40 30/20+24/40 30/40+12/40 30/20+12/80 90/20+12/40 30/20+36/40 30/60+12/40 30/20+60/40 30/20+84/40