Question

6*(0,4x-3)-4,5*(x+2) при х= 1 2\3

Answer 1

Вооооооооооооооооооооооот

Answer 2

2,4x-18-4,5x-9=-27-2,1x= -27-2,1 * 1 2/3= -27-2,1 * 5/3 = -27-0,7*5= -27-3,5=
=-30,5

Answer 3

To evaluate the expression $6(0.4x-3) - 4.5(x+2)$ for the given values of $x$, which are $x = 1$ and $x = \frac{2}{3}$, follow these steps:

1. Substitute $x$ with the given values and calculate the result for each value of $x$.
2. Perform the arithmetic operations to get the final result.

Let's begin with $x = 1$:

Step 1: $x = 1$

Step 2: $6(0.4 \times 1 - 3) - 4.5(1 + 2)$

Now, calculate the expression for $x = 1$:

$6(0.4 - 3) - 4.5(3)\\ = 6(-2.6) - 13.5\\ = -15.6 - 13.5\\ = -29.1$

So, when $x = 1$, the expression evaluates to $-29.1$.

Next, let's evaluate the expression for $x = \frac{2}{3}$:

Step 1: $x = \frac{2}{3}$

Step 2: $6(0.4 \times \frac{2}{3} - 3) - 4.5(\frac{2}{3} + 2)$

Now, calculate the expression for $x = \frac{2}{3}$:

$6(0.8 - 3) - 4.5(\frac{2}{3} + 2)\\ = 6(-2.2) - 4.5(\frac{8}{3})\\ = -13.2 - \frac{36}{3}\\ = -13.2 - 12\\ = -25.2$

So, when $x = \frac{2}{3}$, the expression evaluates to $-25.2$.

To summarize:

1. $6(0.4x-3) - 4.5(x+2)$ when $x = 1$ evaluates to $-29.1$.
2. $6(0.4x-3) - 4.5(x+2)$ when $x = \frac{2}{3}$ evaluates to $-25.2$.