Add 32/21 and 49/20, Solve 1 11/21 + 2 9/20 as a fraction

Add 32/21 and 49/20

1^st number: 1 11/21, 2^nd number: 2 9/20

32/21 + 49/20 is 1669/420.

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

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 21 × 20 = 420,
32/21 = 32 × 20/21 × 20 = 640/420
Likewise, for the 2nd fraction, since 20 × 21 = 420,
49/20 = 49 × 21/20 × 21 = 1029/420
Add the two like fractions:
640/420 + 1029/420 = 640 + 1029/420 = 1669/420
So, 32/21 + 49/20 = 1669/420
In mixed form: 3409/420

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