Add 4/40 and 21/6, Solve 4/40 + 3 3/6 as a fraction

Add 4/40 and 21/6

1^st number: 4/40, 2^nd number: 3 3/6

4/40 + 21/6 is 18/5.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 6 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
4/40 = 4 × 3/40 × 3 = 12/120
Likewise, for the 2nd fraction, since 6 × 20 = 120,
21/6 = 21 × 20/6 × 20 = 420/120
Add the two like fractions:
12/120 + 420/120 = 12 + 420/120 = 432/120
432/120 simplified gives 18/5
So, 4/40 + 21/6 = 18/5
In mixed form: 33/5

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