Question

question
solve the system by substitution.

(3x - y = 10)
(2x = y)

Explanation:

Step1: Substitute $y=2x$ into first equation

$3x - (2x) = 10$

Step2: Simplify to solve for $x$

$3x-2x=10 \implies x=10$

Step3: Substitute $x=10$ into $y=2x$

$y=2\times10$

Answer:

$x=10$, $y=20$