Contact us
Choose a category below so we can get back to you as quickly as possible.
x-2y=4 x=4+2y 代入4x+3y=5中 有 4*(4+2y)+3y=5 16+8y+3y=5 11y=-11 y=-1 將y=-1代入到x-2y=4中,得 x-2*(-1)=4 x+2=4 x=2 所以 x=2 y=-1
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.