Question

Найти корень уравнения : 4 (0,2x - 7) - 5 (0,3x + 6) = 5 ПРОШУУ РЕШИТЕ

Answer 1

4(0.2x-7)-5(0.3x+6)=5
0.8x-28-1.5x-30-5=0
-0.7x=63
x=63:(-0.7)
x=-90
Ответ: -90

Answer 2

Выше не правильно, ответ -90

Answer 3

Solving the Equation

To solve the given equation 4(0.2x - 7) - 5(0.3x + 6) = 5, we can follow these steps:

1. Expand and simplify the equation. 2. Solve for the value of x.

Step 1: Expand and Simplify the Equation

First, let's expand and simplify the given equation:

4(0.2x - 7) - 5(0.3x + 6) = 5

Expanding the terms inside the parentheses: 0.8x - 28 - 1.5x - 30 = 5

Combining like terms: -0.7x - 58 = 5

Step 2: Solve for the Value of x

Now, let's solve for the value of x:

Adding 58 to both sides of the equation: -0.7x = 63

Dividing both sides by -0.7: x = -90

So, the solution to the equation 4(0.2x - 7) - 5(0.3x + 6) = 5 is x = -90.