Add 16/40 and 42/12, Solve 16/40 + 3 6/12 as a fraction

Add 16/40 and 42/12

1^st number: 16/40, 2^nd number: 3 6/12

16/40 + 42/12 is 39/10.

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,
16/40 = 16 × 3/40 × 3 = 48/120
Likewise, for the 2nd fraction, since 12 × 10 = 120,
42/12 = 42 × 10/12 × 10 = 420/120
Add the two like fractions:
48/120 + 420/120 = 48 + 420/120 = 468/120
468/120 simplified gives 39/10
So, 16/40 + 42/12 = 39/10
In mixed form: 39/10

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