|X|=[latex] \frac{x}{2} [/latex]+28

1) х>0, /x/=x x=x/2+28 x-x/2=28 x/2=28 x=56 проверка /56/=56=(56/2)+28=28+28=56 2) x<0, /x/=-x -x=x/2+28 -x-x/2=28 -(3/2)x=28 x=-28/(3/2)=-28*2/3=- 56/3= - 18 2/3 проверка /-18 2/3 /=18 2/3=(-18 2/3)/2  +28 = -9  1/3 +28 =19-1/3=18 2/3 Ответ. х={-18 2/3; 56}