Question

помогите Плз срочно оч надо

Answer 1

$-2 leq 3-4x leq 5\ -2-3 leq -4x leq leq 5-3\ -5 leq -4x leq 2\ -2 leq 4x leq 5\ -2:4leq x leq 5:4\ -0,5 leq x leq 1,25$

$left { {{1-x geq 0} atop {frac{1}{3}x+3 geq 0}} right. <=> left { {{x leq1} atop {frac{1}{3}x geq -3}} right.<=> left { {{x leq1} atop {x geq -9}} right.\ \ [-9; 1]$