(240-x)÷(260-x)等于多少要算式(240-x)÷(260-x)=80%

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(240-x)÷(260-x)等于多少要算式(240-x)÷(260-x)=80%(240-x)÷(260-x)等于多少要算式(240-x)÷(260-x)=80%(240-x)÷(260-x)等于多

(240-x)÷(260-x)等于多少要算式(240-x)÷(260-x)=80%
(240-x)÷(260-x)等于多少
要算式
(240-x)÷(260-x)=80%

(240-x)÷(260-x)等于多少要算式(240-x)÷(260-x)=80%
240-x=0.8*(260-x)
240-x=208-0.8x
240-208=-0.8x+x
32=0.2x
x=160