If ∣∣∣−x12−14∣∣∣=−12, find x

Question 1 Report

-6

-2

Answer Details

| \begin{matrix} - x & 12 \\ - 1 & 4 \end{matrix} | = - 12

-4x - (-1)12 = -12
-4x + 12 = -12
-4x = -12 - 12
-4x = - 24
x = 6