calculate the value of v

Question

calculate the value of v: 5 - v = 2v - 1

 

v= ____

Answer 1

5 - v = 2v - 1

 

What we need to do is isolate v:

Start by adding v to both sides:

5 - v + v = 2v - 1 + v

5 = 3v - 1

 

Now we add 1 to both sides:

5 + 1 = 3v - 1 + 1

6 = 3v

 

Now we divide both sides by 3:

6 / 3 = 3v / 3

2 = v

 

Now to check our answer:

5 - 2 = 2 * 2 - 1

3 = 4 - 1

3 = 3