Question

Даю 50 баллов, срочно!!! 5. Розв'яжіть рiвняння: a) 7x - 4 = 2 +6x; 6) 3(x+1)=2x; B) 1-2x = 3.​

Answer 1

Відповідь:

Пояснення:

Answer 2

a) 7x - 4 = 2 + 6x:

To solve this equation, we'll first combine like terms by subtracting 6x from both sides of the equation:

7x - 6x - 4 = 2

Simplifying the left side gives us:

x - 4 = 2

Next, we'll isolate the variable x by adding 4 to both sides of the equation:

x - 4 + 4 = 2 + 4

Simplifying both sides gives us:

x = 6

Therefore, the solution to the equation 7x - 4 = 2 + 6x is x = 6.

b) 3(x + 1) = 2x:

To solve this equation, we'll first distribute the 3 on the left side:

3x + 3 = 2x

Next, we'll isolate the variable x by subtracting 2x from both sides of the equation:

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

Simplifying the left side gives us:

x + 3 = 0

Then, we'll isolate the variable x by subtracting 3 from both sides of the equation:

x + 3 - 3 = 0 - 3

Simplifying both sides gives us:

x = -3

Therefore, the solution to the equation 3(x + 1) = 2x is x = -3.

c) 1 - 2x = 3:

To solve this equation, we'll isolate the variable x by subtracting 1 from both sides of the equation:

1 - 2x - 1 = 3 - 1

Simplifying both sides gives us:

-2x = 2

Next, we'll divide both sides by -2 to solve for x:

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

Simplifying both sides gives us:

x = -1

Therefore, the solution to the equation 1 - 2x = 3 is x = -1.

Let me know if you have any other questions!