Question

use substitution to solve the system of equations.
y = x + 5
y - 2x = 1 → x + 5 - 2x = 1
next, you can solve to find the value of x
x + 5 - 2x = 1
-x + 5 = 1
-x = -4
x = 4
now, you can find the value of y
substitute the value of x.
y = x + 5
y = 16 + 5

Explanation:

Step1: Identify x value

From previous steps, we found \( x = 4 \).

Step2: Substitute x into y equation

We have the equation \( y = x + 5 \). Substitute \( x = 4 \) into this equation: \( y = 4 + 5 \).

Step3: Calculate y

Simplify \( 4 + 5 \) to get \( y = 9 \). The error in the original (where 16 was used) was a mistake; the correct x is 4, not 16.

Answer:

The correct value to substitute for \( x \) is 4, so \( y = 4 + 5 = 9 \). The box should have 4, and \( y = 9 \).