x No Plagiarism!f8PviunLibBFaoRx34Mtposted on PENANA How to math?8964 copyright protection576PENANA9DgkgU8wXx 維尼Did I do correctly?8964 copyright protection576PENANABPRKeqFUi8 維尼 172.70.126.147ns 172.70.126.147da2