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7. solve the system by substitution. -2x - 4y = -18 x = y

Question

  1. solve the system by substitution.

-2x - 4y = -18
x = y

Explanation:

Step1: Sustituir $x=y$ en la ecuación

$-2(y) - 4y = -18$

Step2: Combinar términos semejantes

$-6y = -18$

Step3: Despejar $y$

$y = \frac{-18}{-6}$

Step4: Calcular valor de $y$

$y = 3$

Step5: Obtener valor de $x$

$x = y = 3$

Answer:

$x=3$, $y=3$