Add 40/14 and 4/21, Solve 2 12/14 + 4/21 as a fraction

Add 40/14 and 4/21

1^st number: 2 12/14, 2^nd number: 4/21

40/14 + 4/21 is 64/21.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 14 × 3 = 42,
40/14 = 40 × 3/14 × 3 = 120/42
Likewise, for the 2nd fraction, since 21 × 2 = 42,
4/21 = 4 × 2/21 × 2 = 8/42
Add the two like fractions:
120/42 + 8/42 = 120 + 8/42 = 128/42
128/42 simplified gives 64/21
So, 40/14 + 4/21 = 64/21
In mixed form: 31/21

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