Question

-2x-4,2=-0,5. 4(3-x)=7x-(14x+15)

Answer 1

Понятно,если нет напиши

Answer 2

Let's solve the equations step by step:

1. -2x - 4,2 = -0,5:

To solve this equation, we can start by adding 4.2 to both sides to isolate the variable term:

-2x - 4.2 + 4.2 = -0.5 + 4.2

Simplifying the equation:

-2x = 3.7

Now, we need to isolate the variable x. We can do this by dividing both sides by -2:

(-2x) / -2 = 3.7 / -2

Simplifying further:

x = -1.85

Therefore, the solution to the equation -2x - 4.2 = -0.5 is x = -1.85.

2. 4(3 - x) = 7x - (14x + 15):

Let's simplify the equation step by step:

Start by distributing the 4 on the left side and simplify the parentheses:

12 - 4x = 7x - 14x - 15

Combine like terms on the right side:

12 - 4x = -7x - 15

Now, let's isolate the variable terms by moving them to one side of the equation:

Add 7x to both sides:

12 - 4x + 7x = -7x - 15 + 7x

Simplifying the equation:

3x + 12 = -15

Next, we'll move the constant term to the other side by subtracting 12 from both sides:

3x + 12 - 12 = -15 - 12

Simplifying further:

3x = -27

Finally, we'll solve for x by dividing both sides by 3:

(3x) / 3 = -27 / 3

Simplifying:

x = -9

Therefore, the solution to the equation 4(3 - x) = 7x - (14x + 15) is x = -9.