麻烦数学好的,帮忙看下 ()+()- 9 =4 + - - ()-()x(
麻烦数学好的,帮忙看下()+()-9=4+--()-()x()=4÷x-()+()-()=4===444...
麻烦数学好的,帮忙看下
()+()- 9 =4
+ - -
()-()x()=4
÷ x -
()+()-()=4
= = =
4 4 4 展开
()+()- 9 =4
+ - -
()-()x()=4
÷ x -
()+()-()=4
= = =
4 4 4 展开
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