Question

A) (x + y=3, x + y = 9;​

Answer 1

Объяснение:

$\begin {cases}x + y = 3 \\ x + y = 9 \: \: | \times ( - 1)\end {cases} = > \begin {cases}x + y = 3 \\ - x - y = - 9\end {cases} \\ 0 = - 6$

Ответ : (х ; у) = ∅

Answer 2

The system of equations you've provided is:

1. x + y = 3
2. x + y = 9

Let's try to solve this system of equations.

First, notice that the two equations have the same left-hand side (x + y), but different right-hand sides (3 and 9). This suggests that the lines represented by these equations are parallel and will never intersect. Therefore, there is no solution that satisfies both equations simultaneously.

In a graphical representation, these two lines would be parallel and never intersect, indicating that there is no common solution.

So, in this case, the system of equations is inconsistent, and there is no solution that makes both equations true simultaneously.