Add 20/28 and 7/72
20/28 + 7/72 is 409/504.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 28 × 18 = 504,
20/28 = 20 × 18/28 × 18 = 360/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
7/72 = 7 × 7/72 × 7 = 49/504 - Add the two like fractions:
360/504 + 49/504 = 360 + 49/504 = 409/504 - So, 20/28 + 7/72 = 409/504
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