Add 81/20 and 6/40, Solve 4 1/20 + 6/40 as a fraction

Add 81/20 and 6/40

1^st number: 4 1/20, 2^nd number: 6/40

81/20 + 6/40 is 21/5.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40

Next, find the equivalent fraction of both fractional numbers with denominator 40
For the 1st fraction, since 20 × 2 = 40,
81/20 = 81 × 2/20 × 2 = 162/40
Likewise, for the 2nd fraction, since 40 × 1 = 40,
6/40 = 6 × 1/40 × 1 = 6/40
Add the two like fractions:
162/40 + 6/40 = 162 + 6/40 = 168/40
168/40 simplified gives 21/5
So, 81/20 + 6/40 = 21/5
In mixed form: 41/5

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