Question

How to solve y=2x-15 and y=5x

Answer 1

Answer:

By Substitution Method

Step-by-step explanation:

Solve by Substitution :

We have two equations

    y = 5x     ---------------> Equation 1

    y = 2x - 15  ------------> Equation 2

   y= 2x - 15  and y= 5x

So Put the value of y in Equ 2

    (5x) - 2x = -15

     3x = -15

Solve equation [1] for the variable  x  

   3x = - 15  

 x = - 5  

Now

  y = 5x

   x = -5

Use the  x  value to solve for  y  

 y = 5(-5) = -25  

Solution :

{y,x} = {-25,-5}  

So y= -25 and x= -5