Question

1/7+2/21+3/7=? И объясните пожалуйста

Answer 1

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Answer 2

Calculation and Explanation

To calculate the sum of 1/7 + 2/21 + 3/7, we can first find a common denominator for the fractions. The common denominator for 7 and 21 is 21. Then we can convert each fraction to have the common denominator and add them together.

So, 1/7 can be converted to 3/21 (by multiplying the numerator and denominator by 3) and 3/7 can be converted to 9/21 (by multiplying the numerator and denominator by 3).

Now the calculation becomes: 3/21 + 2/21 + 9/21.

Adding these fractions together, we get: 14/21.

Final Answer

So, 1/7 + 2/21 + 3/7 = 14/21, which simplifies to 2/3.