Question

А) 0,2 х – 1 = 4 б) 0,2 : х + 1 = 4

Answer 1

Ответ:

a)

$x = 25$

b)

$x = \frac{1}{15}$

Answer 2

Відповідь:

А) 0,2х-1=4
0,2х=4+1
0,2х=5
Х=0,2*5
Х=25
Б) 0,2:х+1=4
1/5:х+1=4
1/5:111/хх+/х

х+14441=

Покрокове пояснення:

Answer 3

Let's solve the equations step by step:

a) 0.2x - 1 = 4

To isolate the variable x, we can start by adding 1 to both sides of the equation:

0.2x - 1 + 1 = 4 + 1 0.2x = 5

Next, we can multiply both sides of the equation by 10 to eliminate the decimal:

10 * 0.2x = 10 * 5 2x = 50

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

2x/2 = 50/2 x = 25

So the solution to equation (a) is x = 25.

b) 0.2/x + 1 = 4

To solve this equation, we need to isolate the variable x. Let's start by subtracting 1 from both sides:

0.2/x + 1 - 1 = 4 - 1 0.2/x = 3

Next, we can multiply both sides of the equation by x to eliminate the fraction:

x * (0.2/x) = x * 3 0.2 = 3x

To solve for x, we divide both sides of the equation by 3:

0.2/3 = 3x/3 0.067 = x

So the solution to equation (b) is x = 0.067.