
2/9 +4 целых 5/6-1/18


Ответы на вопрос




To solve the expression, let's break it down step by step:
2/9 + 4 The first step is to add the whole numbers. 2/9 + 4 = 4 + 2/9.
4 + 2/9 Now, we add the fraction to the whole number. To do this, we need a common denominator for the whole number (4) and the fraction (2/9). The common denominator is 9.
4 + 2/9 = (4 * 9)/9 + 2/9 = 36/9 + 2/9 = (36 + 2)/9 = 38/9
So, 2/9 + 4 = 38/9.
Next part of the expression:
5/6 - 1/18 To subtract fractions, we need a common denominator. The common denominator for 6 and 18 is 18.
5/6 - 1/18 = (5 * 3)/18 - 1/18 = 15/18 - 1/18 = (15 - 1)/18 = 14/18
Now, we can simplify the fraction. The greatest common divisor (GCD) of 14 and 18 is 2, so we can divide both the numerator and the denominator by 2:
14/18 = (14 ÷ 2)/(18 ÷ 2) = 7/9
So, 5/6 - 1/18 = 7/9.
Now, the final expression:
2/9 + 4 - (5/6 - 1/18)
We already calculated 2/9 + 4 as 38/9 and 5/6 - 1/18 as 7/9. So, the final expression is:
38/9 - 7/9
To subtract the fractions, they need a common denominator, which is 9:
38/9 - 7/9 = (38 - 7)/9 = 31/9
So, the final result is 31/9.


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