3(x+3)=18

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3(x+3)=183(x+3)=183(x+3)=18嗯x+3=18÷3=6x=6-3=3x=33x+3=183x=18-33x=15x=5答案为333X+9=183X=9X=33x+9=18,3x=

3(x+3)=18
3(x+3)=18

3(x+3)=18

x+3=18÷3=6
x=6-3=3

x=3

3x+3=18 3x=18-3 3x=15 x=5

答案为3

3

3X+9=18
3X=9
X=3

3x+9=18,3x=9,x=3

x=3

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