Question

7x - 2(3,5 + x) = 5x - 7;​

Answer 1

Відповідь:

7х-7-2х=5х-7

5х-5х=-7+7

0=0

Покрокове пояснення:

как-то так..

Answer 2

To solve the equation 7x - 2(3.5 + x) = 5x - 7, you can follow these steps:

1. Distribute the -2 on the left side of the equation:

   7x - 2 * 3.5 - 2x = 5x - 7

2. Now, simplify the equation by performing the multiplication:

   7x - 7 - 2x = 5x - 7

3. Next, you can eliminate the constant terms on both sides of the equation by adding 7 to each side:

   7x - 2x = 5x

4. The equation now simplifies to:

   5x = 5x

At this point, you can see that both sides of the equation are equal, which means the equation is an identity, meaning it is true for all values of x. In other words, there are infinitely many solutions for this equation. This is because no matter what value you substitute for x, both sides of the equation will always be equal.