Contact us
Choose a category below so we can get back to you as quickly as possible.
2x-y=8……1式 3x-8y=25……2式 1式×3-2式×2,得 13y=-26 y=-2 x=(8+y)/2=6/2=3
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.