3x-15-2x-8= -5x+1; 3x-2x+5x=1+8+15; 6x=24; x=24:6; x=4. Ответ: x=4.
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3x-15-2x-8= -5x+1; 3x-2x+5x=1+8+15; 6x=24; x=24:6; x=4. Ответ: x=4.