Add 50/12 and 50/21, Solve 4 2/12 + 2 8/21 as a fraction

Add 50/12 and 50/21

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

50/12 + 50/21 is 275/42.

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,
50/21 = 50 × 4/21 × 4 = 200/84
Add the two like fractions:
350/84 + 200/84 = 350 + 200/84 = 550/84
550/84 simplified gives 275/42
So, 50/12 + 50/21 = 275/42
In mixed form: 623/42

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