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6( 2X + 3) - 4 ≤ 38 !

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Răspuns :

12x+18-4<_38
12x+14<_38
12x<_38-14
12x<_24
x<_24:12
x<_2
x{0,1,2}
[tex]6(2x+3)-4 \leq 38 \\ 12x+18-4 \leq 38/+4 \\ 12x+18 \leq 42/-18 \\ 12x \leq 24/:12 \\ x \leq 2 \Rightarrow S={2,1,0,-1,-2,-3,.....-n....}[/tex]