Add 3/18 and 70/45
1st number: 3/18, 2nd number: 1 25/45
3/18 + 70/45 is 31/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
3/18 = 3 × 5/18 × 5 = 15/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
70/45 = 70 × 2/45 × 2 = 140/90 - Add the two like fractions:
15/90 + 140/90 = 15 + 140/90 = 155/90 - 155/90 simplified gives 31/18
- So, 3/18 + 70/45 = 31/18
In mixed form: 113/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/18+70/45 3/36+70/45 3/18+70/90 9/18+70/45 3/54+70/45 15/18+70/45 3/90+70/45 21/18+70/45