Add 30/15 and 70/8
1st number: 2 0/15, 2nd number: 8 6/8
30/15 + 70/8 is 43/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
30/15 = 30 × 8/15 × 8 = 240/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
70/8 = 70 × 15/8 × 15 = 1050/120 - Add the two like fractions:
240/120 + 1050/120 = 240 + 1050/120 = 1290/120 - 1290/120 simplified gives 43/4
- So, 30/15 + 70/8 = 43/4
In mixed form: 103/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/15+70/8 30/15+70/16 90/15+70/8 30/45+70/8 30/15+70/24 30/75+70/8 30/15+70/40 30/15+70/56