Add 42/24 and 45/12, Solve 1 18/24 + 3 9/12 as a fraction

Add 42/24 and 45/12

1^st number: 1 18/24, 2^nd number: 3 9/12

42/24 + 45/12 is 11/2.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 12 is 24

Next, find the equivalent fraction of both fractional numbers with denominator 24
For the 1st fraction, since 24 × 1 = 24,
42/24 = 42 × 1/24 × 1 = 42/24
Likewise, for the 2nd fraction, since 12 × 2 = 24,
45/12 = 45 × 2/12 × 2 = 90/24
Add the two like fractions:
42/24 + 90/24 = 42 + 90/24 = 132/24
132/24 simplified gives 11/2
So, 42/24 + 45/12 = 11/2
In mixed form: 51/2

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