# How do you solve the system using the substitution method for x+2y=8 and y=6?

Jun 20, 2018

color(brown)(x = -4

#### Explanation:

$x + 2 y = 8 , \text{ Eqn (1)}$

$y = 6 , \text{ Eqn (2)}$

Substituting the value of y from Eqn (2) in Eqn (1),

$x + \left(2 \cdot 6\right) = 8$

$x = 8 - 12 = - 4$