Contact us
Choose a category below so we can get back to you as quickly as possible.
From y = 2-x, we get x + y = 2, and substitute x + y = 2, the original formula = 4 (x + y) - 3 = 4 × 2-3 = 5
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.