Add 15/18 and 60/21, Solve 15/18 + 2 18/21 as a fraction

Add 15/18 and 60/21

1^st number: 15/18, 2^nd number: 2 18/21

15/18 + 60/21 is 155/42.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 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 21 × 6 = 126,
60/21 = 60 × 6/21 × 6 = 360/126
Add the two like fractions:
105/126 + 360/126 = 105 + 360/126 = 465/126
465/126 simplified gives 155/42
So, 15/18 + 60/21 = 155/42
In mixed form: 329/42

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