Add 16/21 and 15/72
16/21 + 15/72 is 163/168.
Steps for adding fractions
- 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,
16/21 = 16 × 24/21 × 24 = 384/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
15/72 = 15 × 7/72 × 7 = 105/504 - Add the two like fractions:
384/504 + 105/504 = 384 + 105/504 = 489/504 - 489/504 simplified gives 163/168
- So, 16/21 + 15/72 = 163/168
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