Add 56/35 and 70/12, Solve 1 21/35 + 5 10/12 as a fraction

Add 56/35 and 70/12

1^st number: 1 21/35, 2^nd number: 5 10/12

56/35 + 70/12 is 223/30.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 12 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 35 × 12 = 420,
56/35 = 56 × 12/35 × 12 = 672/420
Likewise, for the 2nd fraction, since 12 × 35 = 420,
70/12 = 70 × 35/12 × 35 = 2450/420
Add the two like fractions:
672/420 + 2450/420 = 672 + 2450/420 = 3122/420
3122/420 simplified gives 223/30
So, 56/35 + 70/12 = 223/30
In mixed form: 713/30

MathStep (Works offline)

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