9×17+91÷17-5×17+45÷17

9×17+91÷17-5×17+45÷17
9×17+91÷17-5×17+45÷17

9×17+91÷17-5×17+45÷17
=(9-5)*17+(91+45)/17
=4*17+136/17
=68+8
=76

苯死了,乘法交换律和乘法分配律.
=(9×17-5×17)+(91/17-45/17)
=(9-5)×17+(91+45)/17
=4×17+136/17
=68+8
=76