Question

if ( 5/2 ) to the power x minus 1 = ( 2/5 ) into the power x minus 3 then find the value of x

Answer 1

(5/2)^x-1 = (2/5)^x-3

(2/5)^1-x = (2/5)^x-3

1-x = x-3

2x = 4

X = 2.