Add 14/12 and 70/63, Solve 1 2/12 + 1 7/63 as a fraction

Add 14/12 and 70/63

1^st number: 1 2/12, 2^nd number: 1 7/63

14/12 + 70/63 is 41/18.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 12 × 21 = 252,
14/12 = 14 × 21/12 × 21 = 294/252
Likewise, for the 2nd fraction, since 63 × 4 = 252,
70/63 = 70 × 4/63 × 4 = 280/252
Add the two like fractions:
294/252 + 280/252 = 294 + 280/252 = 574/252
574/252 simplified gives 41/18
So, 14/12 + 70/63 = 41/18
In mixed form: 25/18

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad