101×0.87-0.91×87=0.87×(101-91)=0.87×10=8.7
101x0.87-0.91x87
=101x0.87-91x0.87
=(101-91)x0.87
=10x0.87
=8.7
谢谢
101×0.87-0.91×87=1.01+87-0.91x87=(1.01-0.91)x87=0.1x87=8.7
101×0.87-0.91×87
=1.01×87-0.91×87
=(1.01-0.91)×87
=0.1×87
=8.7
101×0.87-91X0.87=167.04