45+15:5-18:3=
45+3-6=
48-6=[42-S]
106-5•4-4•9=
106-20-36=
86-36=[50-E]
(81+19):10:10•1=
100:10:10•1=
10:10•1=
1•1=[1-V]
9•7-(25+7•3)=
63-(25+21)=
63-46=[17-E]
(14+67):9+21+3•7=
81:9+21+21=
9+21+21=
30+21=[51-L]
100-(63:7+56:8):4=
100-(9+7):4=
100-16:4=
100-4=[96-I]
1-V
17-E
42-S
50-E
51-L
96-I