Question

4(x-5)+7(x-8)-9=4(5-x)

Answer 1

Привет!

4(x-5)+7(x-8)-9=4(5-x)

4х-20+7х-56-9=20-4х

15х=105

х=7

Answer 2

Ответ: 7

Объяснение:

4x-20+7x-56-9=20-4x

4x+4x+7x=20+20+56+9

15x=105

x=105:15

x=7

Answer 3

Let's solve the equation step by step:

1. Start by distributing the terms on both sides of the equation:

   4(x-5) + 7(x-8) - 9 = 4(5-x)

   Distribute the numbers on the left side:

   4x - 20 + 7x - 56 - 9 = 4(5-x)

2. Now, combine like terms on both sides of the equation:

   (4x + 7x) - 20 - 56 - 9 = 20 - 4x

   Combine the x terms:

   11x - 85 = 20 - 4x

3. To isolate the variable x, we need to move all the x terms to one side of the equation. We can do this by adding 4x to both sides:

   11x + 4x - 85 = 20

   Combine the x terms:

   15x - 85 = 20

4. Now, add 85 to both sides to isolate the x term:

   15x - 85 + 85 = 20 + 85

   15x = 105

5. Finally, divide both sides by 15 to solve for x:

   (15x)/15 = 105/15

   x = 7

So, the solution to the equation is x = 7.