Add 9/18 and 84/40
1st number: 9/18, 2nd number: 2 4/40
9/18 + 84/40 is 13/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
9/18 = 9 × 20/18 × 20 = 180/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
84/40 = 84 × 9/40 × 9 = 756/360 - Add the two like fractions:
180/360 + 756/360 = 180 + 756/360 = 936/360 - 936/360 simplified gives 13/5
- So, 9/18 + 84/40 = 13/5
In mixed form: 23/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/36+84/40 9/18+84/80 27/18+84/40 9/54+84/40 45/18+84/40 9/90+84/40 63/18+84/40