Add 63/27 and 10/70, Solve 2 9/27 + 10/70 as a fraction

Add 63/27 and 10/70

1^st number: 2 9/27, 2^nd number: 10/70

63/27 + 10/70 is 52/21.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 70 is 1890

Next, find the equivalent fraction of both fractional numbers with denominator 1890
For the 1st fraction, since 27 × 70 = 1890,
63/27 = 63 × 70/27 × 70 = 4410/1890
Likewise, for the 2nd fraction, since 70 × 27 = 1890,
10/70 = 10 × 27/70 × 27 = 270/1890
Add the two like fractions:
4410/1890 + 270/1890 = 4410 + 270/1890 = 4680/1890
4680/1890 simplified gives 52/21
So, 63/27 + 10/70 = 52/21
In mixed form: 210/21

MathStep (Works offline)

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