Add 21/75 and 70/60, Solve 21/75 + 1 10/60 as a fraction

Add 21/75 and 70/60

1^st number: 21/75, 2^nd number: 1 10/60

21/75 + 70/60 is 217/150.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 60 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 75 × 4 = 300,
21/75 = 21 × 4/75 × 4 = 84/300
Likewise, for the 2nd fraction, since 60 × 5 = 300,
70/60 = 70 × 5/60 × 5 = 350/300
Add the two like fractions:
84/300 + 350/300 = 84 + 350/300 = 434/300
434/300 simplified gives 217/150
So, 21/75 + 70/60 = 217/150
In mixed form: 167/150

MathStep (Works offline)

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