Add 18/27 and 50/70
18/27 + 50/70 is 29/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 70 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 27 × 70 = 1890,
18/27 = 18 × 70/27 × 70 = 1260/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
50/70 = 50 × 27/70 × 27 = 1350/1890 - Add the two like fractions:
1260/1890 + 1350/1890 = 1260 + 1350/1890 = 2610/1890 - 2610/1890 simplified gives 29/21
- So, 18/27 + 50/70 = 29/21
In mixed form: 18/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27+50/70 18/54+50/70 54/27+50/70 18/81+50/70 90/27+50/70