Add 3/12 and 56/35, Solve 3/12 + 1 21/35 as a fraction

Add 3/12 and 56/35

1^st number: 3/12, 2^nd number: 1 21/35

3/12 + 56/35 is 37/20.

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

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 12 × 35 = 420,
3/12 = 3 × 35/12 × 35 = 105/420
Likewise, for the 2nd fraction, since 35 × 12 = 420,
56/35 = 56 × 12/35 × 12 = 672/420
Add the two like fractions:
105/420 + 672/420 = 105 + 672/420 = 777/420
777/420 simplified gives 37/20
So, 3/12 + 56/35 = 37/20
In mixed form: 117/20

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