доо. Решите уровнения
1) 7 |x| — 6 |x| = 1;
2) 2|x| + 3|x| = 8;
3) |-х|+4|-х|=9;
4) 5|-х| — 2|-х|= 18;
5) |2x| + 3|2х|=2,4
6) 4 |3x| +5 |3x| =8,1​
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