Add 70/30 and 2/28, Solve 2 10/30 + 2/28 as a fraction

Add 70/30 and 2/28

1^st number: 2 10/30, 2^nd number: 2/28

70/30 + 2/28 is 101/42.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 30 × 14 = 420,
70/30 = 70 × 14/30 × 14 = 980/420
Likewise, for the 2nd fraction, since 28 × 15 = 420,
2/28 = 2 × 15/28 × 15 = 30/420
Add the two like fractions:
980/420 + 30/420 = 980 + 30/420 = 1010/420
1010/420 simplified gives 101/42
So, 70/30 + 2/28 = 101/42
In mixed form: 217/42

MathStep (Works offline)

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