Add 90/18 and 70/27
1st number: 5 0/18, 2nd number: 2 16/27
90/18 + 70/27 is 205/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
90/18 = 90 × 3/18 × 3 = 270/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
70/27 = 70 × 2/27 × 2 = 140/54 - Add the two like fractions:
270/54 + 140/54 = 270 + 140/54 = 410/54 - 410/54 simplified gives 205/27
- So, 90/18 + 70/27 = 205/27
In mixed form: 716/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/36+70/27 90/18+70/54 90/54+70/27 90/18+70/81