((2x+7)(x-4)-(2x-5)(x+4))/(x+4)(x-4)=0-4x=8;x=-2;
Ответ: -2
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((2x+7)(x-4)-(2x-5)(x+4))/(x+4)(x-4)=0
-4x=8;
x=-2;
Ответ: -2
------ - ------- =0
x+4 x-4
2x^2-1x-28- 2x^2-3x+20
-------------------------------- = 0
(x+4)(x-4)
-4x - 8 = 0
-4x=8
x=-2