Add 18/27 and 75/20
1st number: 18/27, 2nd number: 3 15/20
18/27 + 75/20 is 53/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
18/27 = 18 × 20/27 × 20 = 360/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
75/20 = 75 × 27/20 × 27 = 2025/540 - Add the two like fractions:
360/540 + 2025/540 = 360 + 2025/540 = 2385/540 - 2385/540 simplified gives 53/12
- So, 18/27 + 75/20 = 53/12
In mixed form: 45/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27+75/20 18/54+75/20 18/27+75/40 54/27+75/20 18/81+75/20 18/27+75/60 90/27+75/20