Ответ Автор - m11m {7(2x+4)-2(7x+4)>4x{(x-7)(x+4)<07(2x+4)-2(7x+4)>4x14x+28-14x-8>4x36>4x4x<36x<9(x-7)(x+4)<0x=7 x=-4 + - +----- -4 ------- 7 --------- \\\\x∈(-4; 7){x<9{x∈(-4; 7) \\\\\\\\\\\\\\\\\\------- -4 ----------- 7 ------- 9 --------- \\\\\\х∈(-4; 7)Ответ: х∈(-4; 7)