Add 18/27 and 12/90
18/27 + 12/90 is 4/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 90 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 90 × 3 = 270,
12/90 = 12 × 3/90 × 3 = 36/270 - Add the two like fractions:
180/270 + 36/270 = 180 + 36/270 = 216/270 - 216/270 simplified gives 4/5
- So, 18/27 + 12/90 = 4/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27+12/90 18/27+24/90 18/54+12/90 54/27+12/90 18/27+36/90 18/81+12/90 90/27+12/90 18/27+60/90 18/27+84/90