QUESTION IMAGE
Question
- $y = 3x - 7$
$4x + y = -14$
Step1: Sustituir $y$ en la segunda ecuación
Sustituimos $y = 3x - 7$ en $4x + y = -14$:
$4x + (3x - 7) = -14$
Step2: Simplificar y resolver para $x$
Combinar términos semejantes y despejar $x$:
$4x + 3x - 7 = -14$
$7x - 7 = -14$
$7x = -14 + 7$
$7x = -7$
$x = \frac{-7}{7} = -1$
Step3: Calcular el valor de $y$
Sustituir $x = -1$ en $y = 3x - 7$:
$y = 3(-1) - 7 = -3 - 7 = -10$
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$x = -1$, $y = -10$