Question

7*(x+4)=21 пжжжжжжжжжжжжжж

Answer 1

Ответ:

Х=-1

Объяснение:

7х+28=21

7х=21-28

7х=-7

Х=-1

Answer 2

Ответ:

* - можно не писать

$7(x+4)=21$

$7 х +28=21$

$7 х =21-28[tex][tex]7 х =-7$

$x =-1$

Answer 3

To solve the equation 7*(x+4) = 21, you'll need to isolate the variable x. Here's how you can do it step by step:

1. Start with the equation: 7*(x+4) = 21

2. First, distribute the 7 on the left side of the equation by multiplying it with each term inside the parentheses: 7x + 28 = 21

3. Now, subtract 28 from both sides of the equation to isolate the term with x: 7x + 28 - 28 = 21 - 28

4. Simplify: 7x = -7

5. Finally, divide both sides by 7 to solve for x: 7x / 7 = -7 / 7

6. Simplify: x = -1

So, the solution to the equation is x = -1.