Question

2 1/3x - 1/6 • + 2/3 при x=3 •=умножить /=дробь

Answer 1

Пошаговое объяснение:

$2 \frac{1}{3} x - \frac{1}{6} \times \frac{2}{3}$

упрощаем

$\frac{7}{3} x - \frac{1}{3} \times \frac{1}{3} = \frac{7}{3} x - \frac{1}{9} \\ \\ x = 3 \\ \\ \frac{7}{3 } \times 3 - \frac{1}{9} = 7 - \frac{1}{9} = \frac{63}{9} - \frac{1}{9} = \frac{62}{9} \\ \\ = 6 \frac{8}{9}$

Answer 2

To evaluate the expression when x=3, you need to substitute x=3 into the expression and perform the calculations. Let's do that step by step:

1. Substitute x=3 into the expression: 2 1/3x - 1/6 • + 2/3

2 1/3(3) - 1/6 • + 2/3

2. Simplify the expression within parentheses: 2 1/3(3) = 2 + 1/3 * 3 = 2 + 1 = 3

3. Substitute the simplified value back into the expression: 3 - 1/6 • + 2/3

4. Perform the multiplication: 3 - (1/6 * 3) + 2/3 = 3 - (1/2) + 2/3

5. Find the common denominator to combine the fractions: The common denominator for 2 and 3 is 6.

3 - (3/6) + (4/6)

6. Perform the subtraction and combine the fractions: 3 - (3/6) + (4/6) = 3 - (3/6 - 4/6) = 3 - (-1/6) = 3 + 1/6

7. The final result is 3 + 1/6 or 3 1/6.

So, when x=3, the expression evaluates to 3 1/6.