Question

Найдите значение x, если уравнение 5x+4y=15 имеет решения : (x;0), (x;5), (x; -5)Решите умоляю!!

Answer 1

(x;0)  5x+4*0=15

         5x=15

         x=3

 

(x;5)  5x+4*5=15

         5x=15-20

         5x=-5

         x=-1

 

(x;-5) 5x-4*5=15

          5x=15+20

          5x=35

          x=7 

Answer 2

Finding the Value of x

To find the value of x, we can use the given solutions of the equation 5x + 4y = 15, which are (x, 0), (x, 5), and (x, -5).

Let's start by analyzing the given solutions:

1. For the solution (x, 0): - This implies 5x + 4(0) = 15, which simplifies to 5x = 15. - Solving for x, we get x = 3.

2. For the solution (x, 5): - This implies 5x + 4(5) = 15, which simplifies to 5x + 20 = 15. - Solving for x, we get x = -1.

3. For the solution (x, -5): - This implies 5x + 4(-5) = 15, which simplifies to 5x - 20 = 15. - Solving for x, we get x = 7.

So, the values of x for the given solutions are: - For (x, 0): x = 3 - For (x, 5): x = -1 - For (x, -5): x = 7

Therefore, the value of x for the given equation 5x + 4y = 15, with the solutions (x, 0), (x, 5), and (x, -5), are: - x = 3 for the solution (x, 0) - x = -1 for the solution (x, 5) - x = 7 for the solution (x, -5).

I hope this helps! If you have any further questions or need additional assistance, feel free to ask.