Add 20/7 and 28/72
1st number: 2 6/7, 2nd number: 28/72
20/7 + 28/72 is 409/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 7 × 72 = 504,
20/7 = 20 × 72/7 × 72 = 1440/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
28/72 = 28 × 7/72 × 7 = 196/504 - Add the two like fractions:
1440/504 + 196/504 = 1440 + 196/504 = 1636/504 - 1636/504 simplified gives 409/126
- So, 20/7 + 28/72 = 409/126
In mixed form: 331/126
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