3.5x()+0.5x()=4.16

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3.5x()+0.5x()=4.163.5x()+0.5x()=4.163.5x()+0.5x()=4.163.5x(1.04)+0.5x(1.04)=4.164.16÷(3.5+0.5)=1.04所

3.5x()+0.5x()=4.16
3.5x()+0.5x()=4.16

3.5x()+0.5x()=4.16
3.5x(1.04)+0.5x(1.04)=4.16

4.16÷(3.5+0.5)=1.04
所以3.5x(1.04)+0.5x(1.04)=4.16

3.5x()+0.5x()=4.16
(3.5+0.5)×()=4.16
()=4.06÷4=1.04