3(X+2)+4=28

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3(X+2)+4=283(X+2)+4=283(X+2)+4=283(X十2)十4=28=3(X+2)二28一4=3(x+2)=24=(x十2)=24÷3=(X十2)=8=x=8一2=6x是63（X+

3(X+2)+4=28
3(X+2)+4=28

3(X+2)+4=28
3(X十2)十4=28
=3(X+2)二28一4
=3(x+2)=24
=(x十2)=24÷3
=(X十2)=8
=x=8一2
=6

x是6

3（X+2）+4=28
解:3X+6+4=28
3X=18
X=18÷3
X=6

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