# How do you solve y=x-4 and 4x+y=26 using substitution?

Mar 16, 2016

$x = 6$
$y = x - 4$
$26 = 4 x + y$
If $y = y$, then we can rewrite this system as this: $4 x + x - 4 = 26$.
Then we combine like terms and add $4$ on both sides to give us $5 x = 30$. Divide by $5$ on both sides and we arrive at the solution: $x = 6$