Question

4) 3,2-4x=1,25) (7x-2x)×0,8=806)2,2x+x-0,5=0,14​

Answer 1

Ответ:

$4) \: 3.2 - 4x = 1.2 \\ 3.2 - 4x = 1.2 \\ - 4x = 1.2 - 3.2 \\ - 4x = - 2 \\ x = \frac{1}{2} \\ \\ 5) \: (7x - 2x) \times 0.8 = 80 \\ 5x \times 0.8 = 80 \\ 4x = 80 \\ x = 80 \div 4 \\ x = 20 \\ \\ 6) \: 2.2x + x - 0.5 = 0.14 \\ 3.2x - 0.5 = 0.14 \\ 3.2x = 0.14 \div 0.5 \\ 3.2x = 0.64 \\ x = 0.2$

Готово)

Answer 2

Ответ:

Знаю только Ето

Пошаговое объяснение:

4) 3,2-4х=1,2

-4х=1,2-3,2

-4х =-2

Х=-2:4

Х=-0.5

Answer 3

To solve each of the equations, follow these steps:

1. 3 + 2 - 4x = 1.25

Step 1: Combine like terms on the left side. 3 + 2 = 5, so the equation becomes: 5 - 4x = 1.25

Step 2: Move -4x to the right side by adding 4x to both sides. 5 - 4x + 4x = 1.25 + 4x 5 = 1.25 + 4x

Step 3: Move 1.25 to the left side by subtracting 1.25 from both sides. 5 - 1.25 = 1.25 - 1.25 + 4x 3.75 = 4x

Step 4: Solve for x by dividing both sides by 4. x = 3.75 / 4 x = 0.9375

So the solution is x = 0.9375.

2. (7x - 2x) × 0.8 = 80

Step 1: Combine like terms inside the parentheses. 7x - 2x = 5x, so the equation becomes: 5x × 0.8 = 80

Step 2: Multiply 5x by 0.8. 4x = 80

Step 3: Solve for x by dividing both sides by 4. x = 80 / 4 x = 20

So the solution is x = 20.

3. 2.2x + x - 0.5 = 0.14

Step 1: Combine like terms on the left side. 2.2x + x = 3.2x, so the equation becomes: 3.2x - 0.5 = 0.14

Step 2: Move -0.5 to the right side by adding 0.5 to both sides. 3.2x - 0.5 + 0.5 = 0.14 + 0.5 3.2x = 0.64

Step 3: Solve for x by dividing both sides by 3.2. x = 0.64 / 3.2 x = 0.2

So the solution is x = 0.2.