To solve the equation \(-\frac{2}{3} x = 12\), we need to isolate \(x\). This can be done by multiplying both sides of the equation by the reciprocal of \(-\frac{2}{3}\), which is \(-\frac{3}{2}\).
Step 1: Given Equation
We start with the equation:
\[
-\frac{2}{3} x = 12
\]
Step 2: Isolate \(x\)
To isolate \(x\), we multiply both sides of the equation by the reciprocal of \(-\frac{2}{3}\), which is \(-\frac{3}{2}\):
\[
x = 12 \cdot \left(-\frac{3}{2}\right)
\]
Step 3: Calculate \(x\)
Now we perform the multiplication:
\[
x = 12 \cdot \left(-\frac{3}{2}\right) = -18.0
\]