一辆汽车从甲地驶往乙地,每小时行驶45千米,4小时可到达。返回时用了4.5小时,每小时行驶v千米。(列方程并解应用题)3L4E0_5T8y2H6l(I0x8~
算式:提示2h8a/j(_-a4m1s4l(P:A/q3L4E0_5T8y2H6l(I0x8~
答:每小时行驶/d:Q6J0t4_.?9V7S千米。3L4E0_5T8y2H6l(I0x8~