Question

b)2(2x + 1) + 13 < 3(x - 1) + 22
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Answer 1

Răspuns:

4x+2 +13 < 3x-3+22

4x+15<3x+19

4x-3x<19-15

x=3

Answer 2

$\it 2(2x+1)+13<3(x-1)+22 \Rightarrow 4x+2+13< 3x-3+22 \Rightarrow \\ \\ \Rightarrow 4x+15<3x+19 \Rightarrow 4x-3x<19-15 \Rightarrow x<4 \Rightarrow x\in(-\infty,\ \ 4)$