Add 15/18 and 30/42, Solve 15/18 + 30/42 as a fraction

Add 15/18 and 30/42

15/18 + 30/42 is 65/42.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
15/18 = 15 × 7/18 × 7 = 105/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
30/42 = 30 × 3/42 × 3 = 90/126
Add the two like fractions:
105/126 + 90/126 = 105 + 90/126 = 195/126
195/126 simplified gives 65/42
So, 15/18 + 30/42 = 65/42
In mixed form: 123/42

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