票价
儿童:6.5元/张
成人:18.5元/张
1.4x+5.1x=83.2 2.5x+2.1×4=28.4 15-3.2x=7.64
1.2×4= 0.8×0.25= 7.2÷0.09= 3.9×0.01=
0.63÷0.9= 10÷0.5= 3.5×0.2= 0.99÷0.1=
4.3×0.24.3 5.4÷0.95.4
3.2÷0.16320÷16 6.9×1.016.9
45×0.945 3.8﹣3.7 ÷1