Question

pfv me ajudem, olhem a foto.​

Answer 1

Resposta:

( x , y ) = ( 3 , -2 )

Explicação passo a passo:

$\left \{ {{4x + 3y=6 .(5)} \atop {2x+5y=-4 .(-3)}} \right.\\\\\left \{ {{2x+15y=30} \atop {-6x - 15y=12}} \right. \\\\14x = 42\\x = \frac{42}{14}\\x= 3\\\\4x+3y =6\\4.3+3y = 6\\12+3y =6\\3y=6-12\\3y=-6\\y=\frac{-6}{3}\\y=-2$