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Răspuns :

Răspuns:

9*(2x+1)=153

9*2x+ 9*1=153

18x+9=153

18x= 153-9

18x= 144

x= 144:18

x= 8

[tex]\it 9(2x+1)=153|_{:9} \Rightarrow 2x+1=17|_{-1} \Rightarrow 2x=16|_{:2} \Rightarrow x=8[/tex]