Решите неравенство 9(х-2)-3(2х+1)>5х

Question

Решите неравенство 9(х-2)-3(2х+1)>5х

Answer 1

9x-9*2-3(2x+1)>5x
9x-9*2-3(2x+1)>5x
9x-18-(3*2x+3*1)>5x
9x-18-(3*2x+3)>5x
9x-18-(6x+3)>5x
9x-18-6x-3>5x
3x-18-3>5x
3x-21>5x
3x-5x>21
-2x>21
x<21/2<br>x= -21/2