-1<1-2x<2-1<1-2x and 1-2x<2-1<1-2x and -2x<1-1-1< -2x < 1-2 < -2x < 1-2/(-2) > x > 1/(-2)1 > x > -1/2
Ответ: -1/2 < x < 1
-1<1-2x<2
-1<1-2x and 1-2x<2
-1<1-2x and -2x<1
-1-1< -2x < 1
-2 < -2x < 1
-2/(-2) > x > 1/(-2)
1 > x > -1/2
Ответ: -1/2 < x < 1