Question

A) 8x - 3(5 – 7x) = 5x – 15;​

Answer 1

Ответ:

Пошаговое объяснение:

8x-15+21x=5x-15

8x+21x-5x=15-15

24x=0

x=0

Answer 2

To solve the equation 8x - 3(5 - 7x) = 5x - 15, you'll need to simplify and isolate the variable x. Here are the steps to solve the equation:

1. Distribute the -3 on the left side of the equation:

   8x - 3 * 5 + 3 * 7x = 5x - 15

2. Simplify both sides of the equation:

   8x - 15 + 21x = 5x - 15

3. Combine like terms on both sides of the equation. Add the x terms and the constants separately:

   (8x + 21x) - 15 = 5x - 15

   29x - 15 = 5x - 15

4. Now, subtract 5x from both sides of the equation to isolate the x terms:

   29x - 5x - 15 = -15 - 5x

   24x - 15 = -15 - 5x

5. Add 15 to both sides of the equation to move the constant terms to one side:

   24x - 15 + 15 = -15 - 5x + 15

   24x = -5x

6. Now, you can add 5x to both sides to get all the x terms on one side:

   24x + 5x = -5x + 5x

   29x = 0

7. Finally, divide both sides by 29 to solve for x:

   (29x)/29 = 0/29

   x = 0

So, the solution to the equation 8x - 3(5 - 7x) = 5x - 15 is x = 0.