Question

Rezolvati in R ecuatiile, va roooog ajutor
2(1-x)≥4(3x+2)
2-3(x+2)≤5-2x

Answer 1

[tex]2-3(x+2) \leq 5-2x \Longleftrightarrow 2-3x-6 \leq 5-2x \\\;\\ \Longleftrightarrow -3x+2x \leq 5+6-2 \Longleftrightarrow -x \leq 9|_{\cdot(-1)} \Longleftrightarrow x\geq -9\\\;\\ S = [ -9,\ \infty) .[/tex]

Answer 2

2(1-x)>=4(3x+2) 2-2x>=12x+8 7x+3<=0 x<=-3/7 (- infinit; -3/7]................................ 2-3(x+2)<=5-2x -3x-4<=5-2x x+9>=0 x>=-9 [-9; + infinit )