Add 27/30 and 27/40
27/30 + 27/40 is 63/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
27/30 = 27 × 4/30 × 4 = 108/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
27/40 = 27 × 3/40 × 3 = 81/120 - Add the two like fractions:
108/120 + 81/120 = 108 + 81/120 = 189/120 - 189/120 simplified gives 63/40
- So, 27/30 + 27/40 = 63/40
In mixed form: 123/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30+27/40 27/30+54/40 27/60+27/40 27/30+27/80 81/30+27/40 27/30+81/40 27/90+27/40