Question

If (x - 1)/x = 20, then x =
O a. -21
O b.-19
c. -1/19
O d.-1/21

Answer 1

-1/19 = x

Explanation:

(x - 1)/x = 20

Multiply each side by x

(x - 1)/x *x = 20*x

x-1 = 20x

Subtract x from each side

x-1-x = 20x-x

-1 = 19x

Divide each side by 19

-1/19 = x