Add 70/30 and 15/45
1st number: 2 10/30, 2nd number: 15/45
70/30 + 15/45 is 8/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 45 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 45 × 2 = 90,
15/45 = 15 × 2/45 × 2 = 30/90 - Add the two like fractions:
210/90 + 30/90 = 210 + 30/90 = 240/90 - 240/90 simplified gives 8/3
- So, 70/30 + 15/45 = 8/3
In mixed form: 22/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/30+30/45 70/60+15/45 70/30+15/90 70/90+15/45 70/30+75/45