Add 42/15 and 20/12, Solve 2 12/15 + 1 8/12 as a fraction

Add 42/15 and 20/12

1^st number: 2 12/15, 2^nd number: 1 8/12

42/15 + 20/12 is 67/15.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 12 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 15 × 4 = 60,
42/15 = 42 × 4/15 × 4 = 168/60
Likewise, for the 2nd fraction, since 12 × 5 = 60,
20/12 = 20 × 5/12 × 5 = 100/60
Add the two like fractions:
168/60 + 100/60 = 168 + 100/60 = 268/60
268/60 simplified gives 67/15
So, 42/15 + 20/12 = 67/15
In mixed form: 47/15

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