Add 42/12 and 27/45, Solve 3 6/12 + 27/45 as a fraction

Add 42/12 and 27/45

1^st number: 3 6/12, 2^nd number: 27/45

42/12 + 27/45 is 41/10.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180

Next, find the equivalent fraction of both fractional numbers with denominator 180
For the 1st fraction, since 12 × 15 = 180,
42/12 = 42 × 15/12 × 15 = 630/180
Likewise, for the 2nd fraction, since 45 × 4 = 180,
27/45 = 27 × 4/45 × 4 = 108/180
Add the two like fractions:
630/180 + 108/180 = 630 + 108/180 = 738/180
738/180 simplified gives 41/10
So, 42/12 + 27/45 = 41/10
In mixed form: 41/10

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