Add 3/84 and 18/15, Solve 3/84 + 1 3/15 as a fraction

Add 3/84 and 18/15

1^st number: 3/84, 2^nd number: 1 3/15

3/84 + 18/15 is 173/140.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 15 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 84 × 5 = 420,
3/84 = 3 × 5/84 × 5 = 15/420
Likewise, for the 2nd fraction, since 15 × 28 = 420,
18/15 = 18 × 28/15 × 28 = 504/420
Add the two like fractions:
15/420 + 504/420 = 15 + 504/420 = 519/420
519/420 simplified gives 173/140
So, 3/84 + 18/15 = 173/140
In mixed form: 133/140

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