Add 64/21 and 14/40, Solve 3 1/21 + 14/40 as a fraction

Add 64/21 and 14/40

1^st number: 3 1/21, 2^nd number: 14/40

64/21 + 14/40 is 1427/420.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 21 × 40 = 840,
64/21 = 64 × 40/21 × 40 = 2560/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
14/40 = 14 × 21/40 × 21 = 294/840
Add the two like fractions:
2560/840 + 294/840 = 2560 + 294/840 = 2854/840
2854/840 simplified gives 1427/420
So, 64/21 + 14/40 = 1427/420
In mixed form: 3167/420

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