Let's solve the equation step by step:
-х + 2.8 = 2 * (4.1 - х)-х + 2.8 = 8.2 - 2х2х - х = 8.2 - 2.8х = 5.4
Therefore, the solution is d) 5.4.
Let's solve the equation step by step:
-х + 2.8 = 2 * (4.1 - х)
-х + 2.8 = 8.2 - 2х
2х - х = 8.2 - 2.8
х = 5.4
Therefore, the solution is d) 5.4.