3/4乘3/4加0.75减75%

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3/4乘3/4加0.75减75%3/4乘3/4加0.75减75%3/4乘3/4加0.75减75%3/4乘3/4加0.75减75%=0.75×0.75+0.75-0.75=0.75×0.75=0.562

3/4乘3/4加0.75减75%
3/4乘3/4加0.75减75%

3/4乘3/4加0.75减75%
3/4乘3/4加0.75减75%=0.75×0.75+0.75-0.75=0.75×0.75=0.5625=9/16

3/4×3/4+0.75-75%
=9/16+3/4-3/4
=9/16

1+1= 2*5= 3*4=

=0.75*0.75+0.75-0.75=0.5625=9/16,谢谢,请采纳