Contact us
Choose a category below so we can get back to you as quickly as possible.
先解x-2y=1(1) 2x-3y=5(2) (1)*2-(2) -y=-3 y=3,x=1+2y=7 代入另兩個方程 n=x+2y=13 m=x+y=10
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.