Question

What is the value of x in the equation 8x – 2y = 48, when y = 4?

Answer 1

x=7

Explanation:

8x – 2y = 48

Let y=4

8x -2(4) = 48

8x - 8 = 48

Add 8 to each side

8x-8+8= 48+8

8x = 56

Divide by 8

8x/8 = 56/8

x = 7

Answer 2

Answer: x = 7

Explanation:

First, we will plug 4 in for y. Then, to solve we will isolate the variable "x" in the equation.

Given:

8x – 2y = 48

Plug in the y value of 4:

8x – 2(4) = 48

Multiply -2 times 4:

8x – 8 = 48

Add 8 to both sides of the equation:

8x = 56

Divide both sides of the equation by 8:

x = 7