Add 5/6 and 70/72, Solve 5/6 + 70/72 as a fraction

Add 5/6 and 70/72

5/6 + 70/72 is 65/36.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 72 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 6 × 12 = 72,
5/6 = 5 × 12/6 × 12 = 60/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
70/72 = 70 × 1/72 × 1 = 70/72
Add the two like fractions:
60/72 + 70/72 = 60 + 70/72 = 130/72
130/72 simplified gives 65/36
So, 5/6 + 70/72 = 65/36
In mixed form: 129/36

MathStep (Works offline)

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