Add 70/12 and 72/14, Solve 5 10/12 + 5 2/14 as a fraction

Add 70/12 and 72/14

1^st number: 5 10/12, 2^nd number: 5 2/14

70/12 + 72/14 is 461/42.

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

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
70/12 = 70 × 7/12 × 7 = 490/84
Likewise, for the 2nd fraction, since 14 × 6 = 84,
72/14 = 72 × 6/14 × 6 = 432/84
Add the two like fractions:
490/84 + 432/84 = 490 + 432/84 = 922/84
922/84 simplified gives 461/42
So, 70/12 + 72/14 = 461/42
In mixed form: 1041/42

MathStep (Works offline)

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