Question

Решите систему неравенств: 4(9x+3)-9(4x+3)>3x, (x-2)(x+9)<0

Answer 1

4(9x+3)-9 (4x+3)> 3x
36 x+12-36x-27> 3x
-3x >-12+27
-3x > 15
x <15÷(-3)
x<5