Add 70/60 and 63/28, Solve 1 10/60 + 2 7/28 as a fraction

Add 70/60 and 63/28

1^st number: 1 10/60, 2^nd number: 2 7/28

70/60 + 63/28 is 41/12.

Find the least common denominator or LCM of the two denominators:
LCM of 60 and 28 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 60 × 7 = 420,
70/60 = 70 × 7/60 × 7 = 490/420
Likewise, for the 2nd fraction, since 28 × 15 = 420,
63/28 = 63 × 15/28 × 15 = 945/420
Add the two like fractions:
490/420 + 945/420 = 490 + 945/420 = 1435/420
1435/420 simplified gives 41/12
So, 70/60 + 63/28 = 41/12
In mixed form: 35/12

MathStep (Works offline)

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