Add 42/4 and 15/18, Solve 10 2/4 + 15/18 as a fraction

Add 42/4 and 15/18

1^st number: 10 2/4, 2^nd number: 15/18

42/4 + 15/18 is 34/3.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 18 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 4 × 9 = 36,
42/4 = 42 × 9/4 × 9 = 378/36
Likewise, for the 2nd fraction, since 18 × 2 = 36,
15/18 = 15 × 2/18 × 2 = 30/36
Add the two like fractions:
378/36 + 30/36 = 378 + 30/36 = 408/36
408/36 simplified gives 34/3
So, 42/4 + 15/18 = 34/3
In mixed form: 111/3

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