Add 3/21 and 3/72
3/21 + 3/72 is 31/168.
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,
3/21 = 3 × 24/21 × 24 = 72/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
3/72 = 3 × 7/72 × 7 = 21/504 - Add the two like fractions:
72/504 + 21/504 = 72 + 21/504 = 93/504 - 93/504 simplified gives 31/168
- So, 3/21 + 3/72 = 31/168
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