Add 50/12 and 9/21, Solve 4 2/12 + 9/21 as a fraction

Add 50/12 and 9/21

1^st number: 4 2/12, 2^nd number: 9/21

50/12 + 9/21 is 193/42.

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,
50/12 = 50 × 7/12 × 7 = 350/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
9/21 = 9 × 4/21 × 4 = 36/84
Add the two like fractions:
350/84 + 36/84 = 350 + 36/84 = 386/84
386/84 simplified gives 193/42
So, 50/12 + 9/21 = 193/42
In mixed form: 425/42

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