Add 72/84 and 30/15, Solve 72/84 + 2 0/15 as a fraction

Add 72/84 and 30/15

1^st number: 72/84, 2^nd number: 2 0/15

72/84 + 30/15 is 20/7.

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,
72/84 = 72 × 5/84 × 5 = 360/420
Likewise, for the 2nd fraction, since 15 × 28 = 420,
30/15 = 30 × 28/15 × 28 = 840/420
Add the two like fractions:
360/420 + 840/420 = 360 + 840/420 = 1200/420
1200/420 simplified gives 20/7
So, 72/84 + 30/15 = 20/7
In mixed form: 26/7

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