Add 12/15 and 30/35
12/15 + 30/35 is 58/35.
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,
12/15 = 12 × 7/15 × 7 = 84/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
30/35 = 30 × 3/35 × 3 = 90/105 - Add the two like fractions:
84/105 + 90/105 = 84 + 90/105 = 174/105 - 174/105 simplified gives 58/35
- So, 12/15 + 30/35 = 58/35
In mixed form: 123/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+30/35 12/15+60/35 12/30+30/35 12/15+30/70 36/15+30/35 12/15+90/35 12/45+30/35 60/15+30/35 12/75+30/35 84/15+30/35