Add 36/12 and 28/21, Solve 3 0/12 + 1 7/21 as a fraction

Add 36/12 and 28/21

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

36/12 + 28/21 is 13/3.

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,
36/12 = 36 × 7/12 × 7 = 252/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
28/21 = 28 × 4/21 × 4 = 112/84
Add the two like fractions:
252/84 + 112/84 = 252 + 112/84 = 364/84
364/84 simplified gives 13/3
So, 36/12 + 28/21 = 13/3
In mixed form: 41/3

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