Add 14/21 and 15/72, Solve 14/21 + 15/72 as a fraction

Add 14/21 and 15/72

14/21 + 15/72 is 7/8.

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,
14/21 = 14 × 24/21 × 24 = 336/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
15/72 = 15 × 7/72 × 7 = 105/504
Add the two like fractions:
336/504 + 105/504 = 336 + 105/504 = 441/504
441/504 simplified gives 7/8
So, 14/21 + 15/72 = 7/8

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