Question

х - 2 0
_______ == 16
х - 1 7

Answer 1

( Х - 20 ) / ( Х - 17 ) = 16
Х - 20 = 16( Х - 17 )
Х - 20 = 16х - 272
16х - Х = 272 - 20
15х = 252
Х = 252 : 15
Х = 16,8