×72%=
÷=
1+3%=
+1÷7=
×÷×=
10÷10%=
×=
-=
0×+=
1÷-÷1=
(+)×48 23×+8× 8.7×-3.2÷
80× ÷(+) ×1.8+0.25×8.9-25%×0.7
x:= x-x=4.2 0.2×25-40%x=