A) 2x+5=9 then if x=1
2+5=9 which is wrong then A is wrong
B) x=2
2×2+5=9
4+5=9
then B is correct
C) x=3
2×3+5=9
6+5=9
then C is wrong
D) 2x+5<9
2×1+5<9
2+5<9
7<9
D is correct
E)x=2
2×2+5<9
4+5<9
9<9
E is wrong
F) x=3
2×3+5<9
6+5<9
11<9
F is wrong
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