Question

Metodo de sustitucion
{4x-5y=-9
{2x+3y=1​

Answer 1

Respuesta:

x = -1  y = 1

Explicación paso a paso:

$\left \{ {{4x-5y=-9} \atop {2x+3y=1}} \right.$

$\left \{ {{4x-5y=-9} \atop {x=\frac{1-3y}2}\\}} \right.$

$\left \{ {{4(\frac{1-3y}{2})-5y=-9} \atop {x=\frac{1-3y}{2} }} \right.$

$\left \{ {{4-12y-10y=-18} \atop {x=\frac{1-3y}{2} }} \right.$

$\left \{ {{-22y=-22} \atop {x=\frac{1-3y}{2} }} \right.$

$\left \{ {{y=\frac{-22}{-22} } \atop {x=\frac{1-3y}{2} }} \right.$

$\left \{ {{y=1} \atop {x=\frac{1-3}{2} }} \right.$

$\left \{ {{y=1} \atop {x=-1 }} \right.$