X - 1 = 20

Question

X - 1 = 20

_________

 

     X

 

 

 

Key say -1/19. How

Answer 1

Multiply both sides of the equation by x.

 

x - 1 = 20x

 

 

Subtract x on both sides of the equation.

 

-1 = 19x

 

 

Divide both sides of the equation by 19.

 

-1/19 = x

Answer 2

Are you trying to solve for x in

 

(x -1)/x = 20 ?

 

That is not clear from the problem statement.  Assuming that is what you want, here is a solution:

 

(x - 1)/x = 20

 

Multiply both sides by x and get

 

x - 1 = 20x

 

Subtract x from both sides and get

 

-1 = 20x - x = 19x

 

19x = -1

 

x = -1/19