Question

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

Answer 1

By Substitution Method

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