Answers

2015-07-15T08:15:32+08:00
(5x-17x-15)÷(x-4)

-> 12x-15 ÷ x-4
-x +15 -x +15
================
11x + 0 ÷ 0 + 11
11x ÷ 11
----- ----
11 11

x = 1
0