300. Решите уравнения: 1) 7|x|-6|x| = 1; 2) 2x +3|x| = 8; 301. Вычислите: 3) |-x|+4|-x| = 9; 4) 5|-x|-2|-x| = 18; 5) 2x+3|2x = 2,4; 6) 4/3x+5|3x| = 8,1₁ СРОЧНО 30 БАЛЛОВ ДАЮ​
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