Question

A) 2x - 8 = 0b) 3x - 8 = 4c) 3x + 8 = xd) 5x = 180 - 5xe) 5x - 2 = 3x+2​

Answer 1

Ответ:

а) 2x=8

x=4

b)3x=12

x=4

c)3x-x=-8

2x=-8

x=-4

d)5x+5x=180

10x=180

x=18

e)5x-3x=2-2

2x=0

x=0

Answer 2

Let's solve each of the equations:

a) 2x - 8 = 0

To solve this equation, we can add 8 to both sides to isolate the variable x:

2x - 8 + 8 = 0 + 8 2x = 8

Then, divide both sides of the equation by 2 to solve for x:

2x/2 = 8/2 x = 4

Therefore, the solution to the equation is x = 4.

b) 3x - 8 = 4

We can solve this equation by adding 8 to both sides to isolate the variable x:

3x - 8 + 8 = 4 + 8 3x = 12

Divide both sides of the equation by 3:

3x/3 = 12/3 x = 4

So the solution to the equation is x = 4.

c) 3x + 8 = x

To solve this equation, we need to isolate the variable x on one side of the equation. We can start by subtracting x from both sides:

3x + 8 - x = x - x 2x + 8 = 0

Next, subtract 8 from both sides:

2x + 8 - 8 = 0 - 8 2x = -8

Divide both sides of the equation by 2:

2x/2 = -8/2 x = -4

The solution to the equation is x = -4.

d) 5x = 180 - 5x

To solve this equation, let's add 5x to both sides to isolate the variable x:

5x + 5x = 180 - 5x + 5x 10x = 180

Then divide both sides of the equation by 10:

10x/10 = 180/10 x = 18

Therefore, the solution to the equation is x = 18.

e) 5x - 2 = 3x + 2

To solve this equation, let's start by subtracting 3x from both sides:

5x - 3x - 2 = 3x - 3x + 2 2x - 2 = 2

Next, add 2 to both sides:

2x - 2 + 2 = 2 + 2 2x = 4

Divide both sides of the equation by 2:

2x/2 = 4/2 x = 2

The solution to the equation is x = 2.