Add 70/25 and 2/21, Solve 2 20/25 + 2/21 as a fraction

Add 70/25 and 2/21

1^st number: 2 20/25, 2^nd number: 2/21

70/25 + 2/21 is 304/105.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 25 × 21 = 525,
70/25 = 70 × 21/25 × 21 = 1470/525
Likewise, for the 2nd fraction, since 21 × 25 = 525,
2/21 = 2 × 25/21 × 25 = 50/525
Add the two like fractions:
1470/525 + 50/525 = 1470 + 50/525 = 1520/525
1520/525 simplified gives 304/105
So, 70/25 + 2/21 = 304/105
In mixed form: 294/105

MathStep (Works offline)

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