Модуль числа. Уравнение. Найдите х, если:
1) 3 |х|=12;
2) 5 |-х|=3;
3)0,9|х|=5,4;
4) |х|+3=9;
5) |-х|-6=10,8;
6) -|х|+7=10;
7) |-х|:6=2,5;
8) -|х|:1,8=5;
9) |х|:0,75=4.
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