Add 45/12 and 7/35
1st number: 3 9/12, 2nd number: 7/35
45/12 + 7/35 is 79/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
45/12 = 45 × 35/12 × 35 = 1575/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
7/35 = 7 × 12/35 × 12 = 84/420 - Add the two like fractions:
1575/420 + 84/420 = 1575 + 84/420 = 1659/420 - 1659/420 simplified gives 79/20
- So, 45/12 + 7/35 = 79/20
In mixed form: 319/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+7/35 45/12+14/35 45/24+7/35 45/12+7/70 45/12+21/35 45/36+7/35 45/60+7/35 45/12+49/35 45/84+7/35