Question

4x + 3y = 1
2x + 5y = 11 cuánto valor tiene la incógnita x?​

Answer 1

Respuesta:

$x=-2\\y=3$  

Explicación paso a paso:

$4x+3y=1\\2x+5y=11\\\\4x+3y=1\\-2(2x+5y)=-2(11)\\\\~~~~~4x+3y=1\\-4x-10y=-22\\\\-7y=-21\\\\y=\cfrac{-21}{-7}\\\\y=3$                       $4x+3y=1\\\\4x+3(3)=1\\\\4x+9=1\\\\4x=1-9\\\\x=\cfrac{-8}{4}\\\\x=-2$