Question

$-48 - x = -39$

Explanation:

Step1: Isolate the $x$ term

Add 48 to both sides.
$-x = -39 + 48$

Step2: Calculate the right-hand side

Simplify the sum.
$-x = 9$

Step3: Solve for $x$

Multiply both sides by -1.
$x = -9$

Answer:

$x = -9$