Question

ДАЮ 85 БАЛЛОВ. АЛГЕБРА ОЧЕНЬ СРОЧНО!!!!

Answer 1

$\sf \large \boldsymbol {} I ) \ \ \displaystyle 6<4x-14\leq 36 \\\\\\ \left \{ {{4x-14>6} \atop {4x-14\leq 36 }} \right. =>\left \{ {{4x>20 } \atop {4x\leq 50 }} \right. => \left \{ {{x>5} \atop {x\leq 12,5 }} \right. => \\\\\\ \boldsymbol { 5 <x\leq 12,5}} \\\\\\ \boldsymbol {x\in (5 \ ; \ \ 12,5 \ ]} \\\\\\\\ II) \ \ \left \{ {{-x+4>0} \atop {3x<-12 }} \right. => \left \{ {{x<4} \atop {x<-4 }} \right. => x\in (-\infty \ ; \ \pmb{-4})$

Answer 2

Ответ:

Объяснение:

1)

$\displaystyle\bf\\6<4x-14\leq 36\\\\6+14<4x-14+14\leq 36+14\\\\20<4x\leq 50\\\\5<x\leq 12.5\\\\x\in(5;12.5]$

2)

$\displaystyle\bf\\\left \{ {{-x+4>0} \atop {3x<-12}} \right. \ \ \left \{ {{x<4} \atop {x<-4}} \right.\ \ \ =>x<-4\\\\x\in(-\infty;-4)$