4/9加括号x减1/2括号等于3请用方程解

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4/9+（x-1/2)=3
4/9+x-1/2=3
x=3+1/2-4/姿桥绝消清9
x=3+9/18-8/18
x=3+1/18
x=3又18分之1
谢谢，请采迹姿纳

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