6.35x0.75+4.65x75%-75%=0.75*(6.35+4.65-1)
=0.75*10
=7.5
（1|69 + 2|71）x23+25÷71
23/69+46/71+25/71
=23/69+(46/71+25/71)
=1/3+1
=4/3谢谢哟还有一道 加油！不客气，