Ответы на вопрос:
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-7" class="latex-formula" id="TexFormula2" src="https://tex.z-dn.net/?f=%28%5Cfrac%7B1%7D%7B25%7D%29%5E%7B2-x%7D%3C125%5E%7Bx%2B1%7D%5C%5C5%5E%7B-4%2B2x%7D%3C5%5E%7B3x%2B3%7D%5C%5C-4%2B2x%3C3x%2B3%5C%5C-x%3C7%5C%5Cx%3E-7" title="(\frac{1}{25})^{2-x}<125^{x+1}\\5^{-4+2x}<5^{3x+3}\\-4+2x<3x+3\\-x<7\\x>-7">
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F: r=> z, f(x)=[x] f(2,71)=[2,71]=2 f(0,49)=[0,49]=0 f(3 5/7)=[3 5\7]=3 f(-3,14)=[-3,14]=-4 f(-5,81)=[-5,81]=-6 f(-7,9)=[-7,9]=-8
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