Add 40/4 and 4/21, Solve 10 0/4 + 4/21 as a fraction

Add 40/4 and 4/21

1^st number: 10 0/4, 2^nd number: 4/21

40/4 + 4/21 is 214/21.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 4 × 21 = 84,
40/4 = 40 × 21/4 × 21 = 840/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
4/21 = 4 × 4/21 × 4 = 16/84
Add the two like fractions:
840/84 + 16/84 = 840 + 16/84 = 856/84
856/84 simplified gives 214/21
So, 40/4 + 4/21 = 214/21
In mixed form: 104/21

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