Add 21/35 and 56/12, Solve 21/35 + 4 8/12 as a fraction

Add 21/35 and 56/12

1^st number: 21/35, 2^nd number: 4 8/12

21/35 + 56/12 is 79/15.

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,
21/35 = 21 × 12/35 × 12 = 252/420
Likewise, for the 2nd fraction, since 12 × 35 = 420,
56/12 = 56 × 35/12 × 35 = 1960/420
Add the two like fractions:
252/420 + 1960/420 = 252 + 1960/420 = 2212/420
2212/420 simplified gives 79/15
So, 21/35 + 56/12 = 79/15
In mixed form: 54/15

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