Add 12/14 and 90/12, Solve 12/14 + 7 6/12 as a fraction

Add 12/14 and 90/12

1^st number: 12/14, 2^nd number: 7 6/12

12/14 + 90/12 is 117/14.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 12 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 14 × 6 = 84,
12/14 = 12 × 6/14 × 6 = 72/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
90/12 = 90 × 7/12 × 7 = 630/84
Add the two like fractions:
72/84 + 630/84 = 72 + 630/84 = 702/84
702/84 simplified gives 117/14
So, 12/14 + 90/12 = 117/14
In mixed form: 85/14

MathStep (Works offline)

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