Puzzle 037: 7 Gold Coins

ナゾ０３７　７枚の金貨
ここに７枚の金貨がある。
このうち１枚だけを動かして、表が
出ている金貨と、裏が出ている金貨
の数を同じ枚数にしてほしい。
金貨をタッチすれば裏表ひっくり返す
こともできるよ。
さあ、君にできるかな？

Google Translate
Here are seven gold pieces. Of these only one single move, there are tables and gold, I think that's the same number that the number of gold coins out the back. If I can touch the coin flip sides. Now, Can you do that to you?

Notes on Puzzle
You are given 7 coins arranged on a table. 5 are heads up; 2 are tails up. By moving just one coin, you can make the number of coins with heads up and tails up even. Note that you can also flip the coin you are moving, but you can only touch one coin.