QUESTION IMAGE
Question
- solve the system by substitution.
$4x - 9y = -23$
$y = 3x$
Step1: Sustituir $y=3x$ en la primera ecuación
$4x - 9(3x) = -23$
Step2: Simplificar la ecuación resultante
$4x - 27x = -23$
$-23x = -23$
Step3: Resolver para $x$
$x = \frac{-23}{-23} = 1$
Step4: Calcular $y$ usando $y=3x$
$y = 3(1) = 3$
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$x=1$, $y=3$