x No Plagiarism!pU6prKeuSQwLsCcbvO8kposted on PENANA How to math?8964 copyright protection694PENANA6b8ehQ1bX3 維尼Did I do correctly?8964 copyright protection694PENANA8NIqMpzmrJ 維尼 15.158.61.19ns 15.158.61.19da2