Add 20/60 and 72/84, Solve 20/60 + 72/84 as a fraction

Add 20/60 and 72/84

20/60 + 72/84 is 25/21.

Find the least common denominator or LCM of the two denominators:
LCM of 60 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 60 × 7 = 420,
20/60 = 20 × 7/60 × 7 = 140/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
72/84 = 72 × 5/84 × 5 = 360/420
Add the two like fractions:
140/420 + 360/420 = 140 + 360/420 = 500/420
500/420 simplified gives 25/21
So, 20/60 + 72/84 = 25/21
In mixed form: 14/21

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