Add 3/20 and 84/40
1st number: 3/20, 2nd number: 2 4/40
3/20 + 84/40 is 9/4.
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,
3/20 = 3 × 2/20 × 2 = 6/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
84/40 = 84 × 1/40 × 1 = 84/40 - Add the two like fractions:
6/40 + 84/40 = 6 + 84/40 = 90/40 - 90/40 simplified gives 9/4
- So, 3/20 + 84/40 = 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: 6/20+84/40 3/40+84/40 3/20+84/80 9/20+84/40 3/60+84/40 15/20+84/40 21/20+84/40