Add 18/12 and 36/70
1st number: 1 6/12, 2nd number: 36/70
18/12 + 36/70 is 141/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
18/12 = 18 × 35/12 × 35 = 630/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
36/70 = 36 × 6/70 × 6 = 216/420 - Add the two like fractions:
630/420 + 216/420 = 630 + 216/420 = 846/420 - 846/420 simplified gives 141/70
- So, 18/12 + 36/70 = 141/70
In mixed form: 21/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12+36/70 18/12+72/70 18/24+36/70 54/12+36/70 18/36+36/70 90/12+36/70 18/60+36/70 18/84+36/70