Add 8/40 and 21/12, Solve 8/40 + 1 9/12 as a fraction

Add 8/40 and 21/12

1^st number: 8/40, 2^nd number: 1 9/12

8/40 + 21/12 is 39/20.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
8/40 = 8 × 3/40 × 3 = 24/120
Likewise, for the 2nd fraction, since 12 × 10 = 120,
21/12 = 21 × 10/12 × 10 = 210/120
Add the two like fractions:
24/120 + 210/120 = 24 + 210/120 = 234/120
234/120 simplified gives 39/20
So, 8/40 + 21/12 = 39/20
In mixed form: 119/20

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