решить систему неравенств: 2x больше или равно x-1 4x-5 меньше 5. Created by exortcist. algebra-ru

решить систему неравенств: 2x больше или равно x-1 4x-5 меньше 5...

Mejora

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2x≥x-1
4x-5<5

2x-x≥-1
4x<5+5

x≥-1
x<10/4

x≥-1
x<2.5
//////////////////////////////////////////////
______________________-1______________2.5__________>
/////////////////////////////////////////////////////////////////////
x∈[-1;2.5)

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Эксперт5

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$\left \{ {{2x \geq x-1} \atop {4x-5\ \textless \ 5}} \right.\\ \left \{ {{2x-x \geq -1} \atop {4x\ \textless \ 5+5}} \right. \\ \left \{ {{x \geq -1} \atop {4x\ \textless \ 10}} \right. \\ \left \{ {{x \geq -1} \atop {x\ \textless \ 2,5}} \right.$

______________[-1]///////////////////////////////////////////////////////
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ (2,5)_______________________

x∈[-1; 2,5)

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