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혼합계산 : 레벨2

1
5X1+(4-1)
=
8
2
3X5-(7+6)
=
2
3
6+(8+2)X6
=
66
4
8+(6-3)-8
=
3
5
(5X6)+8+6
=
44
6
8X3-(5X2)
=
14
7
8X(9X7)-5
=
499
8
(2X6)+2-5
=
9
9
(8-2)-1/1
=
5
10
6X(4/2)+1
=
13
11
(7+7)/2X1
=
7
12
(2X9)+6/2
=
21
13
1X(6+5)-4
=
7
14
9-(9-6)X1
=
6
15
(5X2)+2-8
=
4