Add 84/18 and 27/40
1st number: 4 12/18, 2nd number: 27/40
84/18 + 27/40 is 641/120.
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,
84/18 = 84 × 20/18 × 20 = 1680/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
27/40 = 27 × 9/40 × 9 = 243/360 - Add the two like fractions:
1680/360 + 243/360 = 1680 + 243/360 = 1923/360 - 1923/360 simplified gives 641/120
- So, 84/18 + 27/40 = 641/120
In mixed form: 541/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/18+54/40 84/36+27/40 84/18+27/80 84/18+81/40 84/54+27/40 84/90+27/40