solve the following equation v(12-x)=v(x+6)

Question

a. 6
b. 9
c. 3
d. no real solution

Answer 1

You'll want to simplify the equation and then solve for x.

12v-vx=vx+6v

+vx to both sides

12v = 2vx + 6v

-6v from both sides

6v = 2vx

Divide both sides by v           (note you could divide by 2v to combine two steps here)

6 = 2x

Divide both sides by 2

3 = x

 

So if they are asking for the value of x, the answer is c. 3