Question

1) 3+6х=2(х+4). 2) 2х-4=ах-2арешите уравнения пж​

Answer 1

Ответ:

1)х=1,25

2)х=2+а / х=а-2

Пошаговое объяснение:

1)3+6х=2(х+4)

6х-2х=8-3

4х=5

х=1,25или1.1/4

2)2х-4=ах-2а

2х-ах+2х=4

(х-а)в квадрате=4

х-а=2 / х-а=-2

х=2+а / х=а-2

Answer 2

Наверное вот так:

1. уравнение:

3+6х=2(х+4)

6х+3=2(х+4)

6х+3=2х+8

(6х-2х)+3=(2х-2х)+8

4х+3=(2х-2х)+8

4х+3=8

4х+(3-3)=8-3

4х=5

2. уравнение:

2х-4=ах-2а

х(2-а)=4-2а

Answer 3

To solve the equations, I'll go through each one step by step:

1. 3 + 6x = 2(x + 4)

To solve this equation for x, follow these steps:

Step 1: Distribute the 2 on the right side: 3 + 6x = 2x + 8

Step 2: Move the x term to one side of the equation by subtracting 2x from both sides: 3 + 4x = 8

Step 3: Isolate the x term on one side by subtracting 3 from both sides: 4x = 5

Step 4: Finally, divide both sides by 4 to find the value of x: x = 5/4 or 1.25

So, the solution for the equation is x = 1.25.

2. 2x - 4 = ax - 2a

To solve this equation for x, follow these steps:

Step 1: Move the x term to one side of the equation by subtracting ax from both sides: 2x - ax - 4 = -2a

Step 2: Factor out the x on the left side: x(2 - a) - 4 = -2a

Step 3: Now, isolate x by adding 4 to both sides: x(2 - a) = -2a + 4

Step 4: Finally, divide both sides by (2 - a) to find the value of x: x = (-2a + 4) / (2 - a)

So, the solution for the equation is x = (-2a + 4) / (2 - a).