x+12=36 x+12(填符号)(填数字)=36(符号)(数字) x =(数字)

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x+12=36x+12(填符号)(填数字)=36(符号)(数字)x=(数字)x+12=36x+12(填符号)(填数字)=36(符号)(数字)x=(数字)x+12=36x+12(填符号)(填数字)=36

x+12=36 x+12(填符号)(填数字)=36(符号)(数字) x =(数字)
x+12=36 x+12(填符号)(填数字)=36(符号)(数字) x =(数字)

x+12=36 x+12(填符号)(填数字)=36(符号)(数字) x =(数字)
x+12(-)(12)=36(-)(12)
x=(24)

x+12=36 x+12-12=36-12 x=24

x 12 36=36 1.5x=72