(-3)²÷(-1又4分之3)×0.75×丨-2又3分之1丨÷丨-3丨=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/03 20:02:51
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(-3)²÷(-1又4分之3)×0.75×丨-2又3分之1丨÷丨-3丨=?
(-3)²÷(-1又4分之3)×0.75×丨-2又3分之1丨÷丨-3丨=?
(-3)²÷(-1又4分之3)×0.75×丨-2又3分之1丨÷丨-3丨=?
(-3)²÷(-1又4分之3)×0.75×丨-2又3分之1丨÷丨-3丨
=9÷(7/4)x3/4x7/3÷3
=9÷3x(4/7)x3/4x7/3
=3x3/7x7/3
=3x1
=3
原式=9*(-4/7)*3/4*7/3*1/3
=-9*4/7*3/4*7/3*1/3
=-3