Hello there!
[tex]4v - 1 = -5v - 10[/tex]
Explanation:
↓↓↓↓↓↓↓↓↓↓↓
First you had to add by 1 from both sides of the equation.
[tex]4v-1+1=-5v-10+1[/tex]
Simplify
[tex]4v=-5v-9[/tex]
Then you add by 5v from both sides of the equation.
[tex]4v+5v=-5v-9+5v[/tex]
Simplify
[tex]9v=-9[/tex]
Divide by 9 from both sides of the equation.
[tex]\frac{9v}{9}=\frac{-9}{9}[/tex]
Simplify it should be the correct answer.
[tex]v=-1[/tex]
Answer⇒⇒⇒⇒v=-1
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-Charlie