To solve the equation \( 2x - 5 = -21 \), we can follow these steps:
Step 1: Add 5 to both sides of the equation
\[ 2x - 5 + 5 = -21 + 5 \implies 2x = -16 \]
Step 2: Divide both sides by 2
\[ \frac{2x}{2} = \frac{-16}{2} \implies x = -8 \]
Solution
The solution to the equation \( 2x - 5 = -21 \) is \( x = -8 \).