Add 70/30 and 3/18
1st number: 2 10/30, 2nd number: 3/18
70/30 + 3/18 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
70/30 = 70 × 3/30 × 3 = 210/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
3/18 = 3 × 5/18 × 5 = 15/90 - Add the two like fractions:
210/90 + 15/90 = 210 + 15/90 = 225/90 - 225/90 simplified gives 5/2
- So, 70/30 + 3/18 = 5/2
In mixed form: 21/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/30+6/18 70/60+3/18 70/30+3/36 70/30+9/18 70/90+3/18 70/30+3/54 70/30+15/18 70/30+3/90 70/30+21/18