如题所述
第1个回答 2017-12-20
原式
=(100-1)x43/100
=100x43/100-1x43/100
=43-43/100
=42又100分之57
=(100-1)x43/100
=100x43/100-1x43/100
=43-43/100
=42又100分之57
第2个回答 2017-12-20
99x43/100=(100-1)x43/100=43-43/100=42又57/100
第3个回答 2017-12-20
99x43%
=(100-1)x0.43
=100x0.43-0.43
=43-0.43
=42.57
=(100-1)x0.43
=100x0.43-0.43
=43-0.43
=42.57