Add 24/12 and 70/21, Solve 2 0/12 + 3 7/21 as a fraction

Add 24/12 and 70/21

1^st number: 2 0/12, 2^nd number: 3 7/21

24/12 + 70/21 is 16/3.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
24/12 = 24 × 7/12 × 7 = 168/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
70/21 = 70 × 4/21 × 4 = 280/84
Add the two like fractions:
168/84 + 280/84 = 168 + 280/84 = 448/84
448/84 simplified gives 16/3
So, 24/12 + 70/21 = 16/3
In mixed form: 51/3

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