Question

3x - 2y =7
7x + 5y = -3​

Answer 1

Respuesta:

(x,y)=($-\frac{21}{169} ,\frac{222}{169}$)

Explicación paso a paso:

$\left \{ {{3x-2y=-3} \atop {77x+5y=-3}} \right.$

$\left \{ {{15x-10y=-15} \atop {154x+10y=-6}} \right.$

169x=-21

x=  $-\frac{21}{169}$

3x($-\frac{21}{169}$)-2y=-3

y=$\frac{222}{169}$

(x,y)=($-\frac{21}{169}$ ,$\frac{222}{169}$)

3x($-\frac{21}{169})-2x\frac{222}{169}=77x(-\frac{21}{169}) +5x \frac{222}{169}$=-3

-3=-3=-3

(x,y)=$(-\frac{21}{169},\frac{222}{169})$