Add 12/20 and 24/21, Solve 12/20 + 1 3/21 as a fraction

Add 12/20 and 24/21

1^st number: 12/20, 2^nd number: 1 3/21

12/20 + 24/21 is 61/35.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 20 × 21 = 420,
12/20 = 12 × 21/20 × 21 = 252/420
Likewise, for the 2nd fraction, since 21 × 20 = 420,
24/21 = 24 × 20/21 × 20 = 480/420
Add the two like fractions:
252/420 + 480/420 = 252 + 480/420 = 732/420
732/420 simplified gives 61/35
So, 12/20 + 24/21 = 61/35
In mixed form: 126/35

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