Add 4/21 and 15/72, Solve 4/21 + 15/72 as a fraction

Add 4/21 and 15/72

4/21 + 15/72 is 67/168.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 21 × 24 = 504,
4/21 = 4 × 24/21 × 24 = 96/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
15/72 = 15 × 7/72 × 7 = 105/504
Add the two like fractions:
96/504 + 105/504 = 96 + 105/504 = 201/504
201/504 simplified gives 67/168
So, 4/21 + 15/72 = 67/168

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