× ÷ ×÷5
÷=
+×=
×=
×÷×=
1÷(+)=
÷0.1=
0.23=
4.5:=
1-×- ÷×
(+)÷ ×34+26×0.125-20÷8
x= 2x-= x+x=140
0.16:0.6 :