Add 18/27 and 90/30
1st number: 18/27, 2nd number: 3 0/30
18/27 + 90/30 is 11/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 30 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
18/27 = 18 × 10/27 × 10 = 180/270 - Likewise, for the 2nd fraction, since 30 × 9 = 270,
90/30 = 90 × 9/30 × 9 = 810/270 - Add the two like fractions:
180/270 + 810/270 = 180 + 810/270 = 990/270 - 990/270 simplified gives 11/3
- So, 18/27 + 90/30 = 11/3
In mixed form: 32/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27+90/30 18/54+90/30 18/27+90/60 54/27+90/30 18/81+90/30 90/27+90/30