Question

Whenever 5x + 3 = 2x - y, which of the following expressions must be equal to x?

A. -y - 3/7
B. y - 3/7
C. -3y - 9
D. y - 3/3
E. -y - 3/3

Answer 1

To find the value of x in the equation 5x + 3 = 2x - y, we first need to isolate the x term on one side of the equation. The expression that must be equal to x is (-y - 3) / 3.

Step-by-step explanation:

To find the value of x in the equation 5x + 3 = 2x - y, we first need to isolate the x term on one side of the equation. We can do this by subtracting 2x from both sides:

5x - 2x + 3 = -y

Next, we combine like terms:

3x + 3 = -y

To solve for x, we isolate the x term by subtracting 3 from both sides:

3x = -y - 3

Lastly, we divide both sides by 3 to solve for x:

x = (-y - 3) / 3

Therefore, the expression that must be equal to x is (-y - 3) / 3.

Answer 2

5x + 3 = 2x - y

3x = -y - 3

x = (-1/3)(y + 3)