QUESTION IMAGE
Question
system by substitution.
$-3x - 6y = 45$
$-5y = x$
Step1: Sustituir $x$ en la primera ecuación
Sustituimos $x = -5y$ en $-3x - 6y = 45$:
$-3(-5y) - 6y = 45$
Step2: Simplificar y resolver para $y$
Calcular el producto y combinar términos:
$15y - 6y = 45$
$9y = 45$
$\frac{9y}{9} = \frac{45}{9}$
$y = 5$
Step3: Calcular el valor de $x$
Sustituimos $y=5$ en $x=-5y$:
$x = -5(5)$
$x = -25$
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$x=-25$, $y=5$