Question

y = -3x
4x - y = 14
the given system of equations has solution (x, y). what is the value of x ?

Explanation:

Step1: Substitute $y=-3x$ into the second equation

Substitute $y = -3x$ into $4x - y = 14$, we get:
$4x - (-3x) = 14$

Step2: Simplify the left-hand side

Simplify the expression:
$4x + 3x = 14$
$7x = 14$

Step3: Solve for $x$

Divide both sides by 7:
$x = \frac{14}{7}$

Answer:

$2$