Answer: 3 = x
Step-by-step explanation: To solve this equation for x, we need to get x by itself on the right side of the equation. Since x is being multiplied by 5, in order to get x by itself, we need to divide by 5 on the right side of the equation but if we divide by 5 on the right side of the equation, we must also divide by 5 on the left side of the equation.
On the right side of the equation the 5's cancel and we have x. On the left side of the equation, 15 divided by 5 is 3 so 3 = x.