Question

Solving graphically
$x + y = 5 \\ x - y = 8$
​

Answer 1

Step-by-step explanation:

$x + y = 5 \\ x - y = 8 \\ + \\ 2x = 13 \\ x = \frac{13}{2} \\ \\ x + y = 5 \\ \frac{13}{2} + y = 5 \\ y = 5 - \frac{13}{2} \\ y = \frac{ - 3}{2}$