287. 1)|x|=3; 2)|x|=-3,9; 3)|y|=2/3; 4)-|y|=-0,2; 5)-|m|=8; 6)-|-n|=6; 7)-|x|=-0,9; 8)-|x|=-7,2. Запишите существующие уравнения и найдите их решения.
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