A superhero recently asked his nemesis how many cats she has. She answered with a riddle: "One-half of my cats plus two ."

How many cats does the nemesis have?

I got ten. Here's the equation.

x = 1/2x + 5

Subtract 1/2x from both sides to get all x's on one side

x - 1/2x = 1/2x - 1/2x + 5

1/2x = 5

Now multiple the left by 2 to get x, but since it's an equation, you need to also multiply the right by 2 to keep it =.

2 * 1/2x = 2 * 5

x = 10 cats

The nemesis has 2 1/2 cats