①3x﹣5=10 ②= ③x:=:
1﹣+= 1÷×= 0.5﹣+0.5﹣=
8.1+= (+)×24= 7××7÷=
1.25×0.08=
+1=
6.97﹣1.09=
+=
5+3﹣5+3=
﹣=
3.34×99+3.34=