Add 15/70 and 36/12
1st number: 15/70, 2nd number: 3 0/12
15/70 + 36/12 is 45/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
15/70 = 15 × 6/70 × 6 = 90/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
36/12 = 36 × 35/12 × 35 = 1260/420 - Add the two like fractions:
90/420 + 1260/420 = 90 + 1260/420 = 1350/420 - 1350/420 simplified gives 45/14
- So, 15/70 + 36/12 = 45/14
In mixed form: 33/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70+36/12 15/70+72/12 15/70+36/24 45/70+36/12 75/70+36/12 15/70+36/60 15/70+36/84