Question

1. 2x + y = 26

y = x + 5

Explanation:

Step1: Substitute $y=x+5$ into first equation

$2x + (x + 5) = 26$

Step2: Simplify and solve for $x$

$3x + 5 = 26$
$3x = 26 - 5$
$3x = 21$
$x = \frac{21}{3} = 7$

Step3: Substitute $x=7$ into $y=x+5$

$y = 7 + 5 = 12$

Answer:

$x=7$, $y=12$