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혼합계산 : 레벨2

1
5X(4+8)-3
=
57
2
3+(5+7)-4
=
11
3
(7+5)+3X3
=
21
4
4+(7-1)-4
=
6
5
(6+1)X2X5
=
70
6
4-1+(9-1)
=
11
7
4-2+(8/4)
=
4
8
6-1-(3X1)
=
2
9
(2+7)-2-2
=
5
10
6X(1X1)-5
=
1
11
7X(5+5)X1
=
70
12
3-(1+1)/2
=
2
13
8X6X(5+3)
=
384
14
(7X3)X6/2
=
63
15
(9X2)+3X4
=
30