Add 8/72 and 12/21
8/72 + 12/21 is 43/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 21 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
8/72 = 8 × 7/72 × 7 = 56/504 - Likewise, for the 2nd fraction, since 21 × 24 = 504,
12/21 = 12 × 24/21 × 24 = 288/504 - Add the two like fractions:
56/504 + 288/504 = 56 + 288/504 = 344/504 - 344/504 simplified gives 43/63
- So, 8/72 + 12/21 = 43/63
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