Ответ:
5(x-1)+7≤1-3(x+2)
5x-5+7≤1-3x-6
5x+3x≤1-6+5-7
8x≤-7 / : 8
x≤-⅞
[-⅞;+∞) б)
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Ответ:
5(x-1)+7≤1-3(x+2)
5x-5+7≤1-3x-6
5x+3x≤1-6+5-7
8x≤-7 / : 8
x≤-⅞
[-⅞;+∞) б)