Add 30/40 and 6/4
1st number: 30/40, 2nd number: 1 2/4
30/40 + 6/4 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 4 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
30/40 = 30 × 1/40 × 1 = 30/40 - Likewise, for the 2nd fraction, since 4 × 10 = 40,
6/4 = 6 × 10/4 × 10 = 60/40 - Add the two like fractions:
30/40 + 60/40 = 30 + 60/40 = 90/40 - 90/40 simplified gives 9/4
- So, 30/40 + 6/4 = 9/4
In mixed form: 21/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/40+6/4 30/40+12/4 30/80+6/4 30/40+6/8 90/40+6/4 30/40+18/4 30/40+6/12 30/40+30/4 30/40+6/20 30/40+42/4 30/40+6/28