Add 70/15 and 80/35
1st number: 4 10/15, 2nd number: 2 10/35
70/15 + 80/35 is 146/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
70/15 = 70 × 7/15 × 7 = 490/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
80/35 = 80 × 3/35 × 3 = 240/105 - Add the two like fractions:
490/105 + 240/105 = 490 + 240/105 = 730/105 - 730/105 simplified gives 146/21
- So, 70/15 + 80/35 = 146/21
In mixed form: 620/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/30+80/35 70/15+80/70 70/45+80/35 70/75+80/35