Contact us
Choose a category below so we can get back to you as quickly as possible.
分別設x,y,z x+y+z=34.6 z= 2.6 x-y=z 求y對吧.將第三個式子代入第一個式子 z+y + y +z =34.6 z已知直接求y
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.