Answer:
v = -6
Step-by-step explanation:
In algebra, the goal is always to isolate the variable, so that its value can be determined.
Step 1: Add 5
-12 = 2v
Step 2: Divide by 2
v = -6
Step 3: Check
-17 = 2(-6) - 5
-17 = -17 ✔️
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