Add 20/72 and 6/21
20/72 + 6/21 is 71/126.
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,
20/72 = 20 × 7/72 × 7 = 140/504 - Likewise, for the 2nd fraction, since 21 × 24 = 504,
6/21 = 6 × 24/21 × 24 = 144/504 - Add the two like fractions:
140/504 + 144/504 = 140 + 144/504 = 284/504 - 284/504 simplified gives 71/126
- So, 20/72 + 6/21 = 71/126
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