0.5+4.5x=45.5
0.8+1.7-x=1.73
2(x-3)=11.6
5.6×100=
5.6+0.8=
1.2×4=
5-0.45=
3.9÷0.1=
7.6÷7.6+2.7=
7.2÷9=
0.45÷0.3=
3.7+6.4=
4.5÷0.9=
2.5×2×0.8=
5xy+2x·y=
9÷0.2=
3.4÷0.34=
0÷3.7=
32-23=