Question

{5х-у=4 {х+у-6=0плиззззз

Answer 1

{5х-у=4      
{-2х-у=5     /х(-1)
{5х-у=4
{2х+у=-5
7х=-1
х=-1/7

{х+у-6=0

2 * -6 = -12 
-4 * 3 = -12 
-4 + 3 = -1 

2x² - 4x + 3x - 6 = 0 
(2x² - 4x) + (3x - 6) = 0 
2x(x - 2) + 3(x - 2) = 0 

(2x + 3)(x - 2) = 0 

2x + 3 = 0 
2x = -3 
x = -3/2 

x - 2 = 0 
x = 2