Add 18/54 and 70/45
1st number: 18/54, 2nd number: 1 25/45
18/54 + 70/45 is 17/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 45 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
18/54 = 18 × 5/54 × 5 = 90/270 - Likewise, for the 2nd fraction, since 45 × 6 = 270,
70/45 = 70 × 6/45 × 6 = 420/270 - Add the two like fractions:
90/270 + 420/270 = 90 + 420/270 = 510/270 - 510/270 simplified gives 17/9
- So, 18/54 + 70/45 = 17/9
In mixed form: 18/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/54+70/45 18/54+70/90 90/54+70/45