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-12 + (-9) x (-3)
-12 + 27
15
B) 7 - 3 x (-4) - 27 : (- -9)
7 + 12 - 27 : 9
7 + 12 - 3
19 - 3
16
C) -45 - (-49) : 7 x (-6)
-45 + 7 x (-6)
-45 - 42
-87
D) -20 + 6 x (-5) : (-2)
-20 + (-30) :(-2)
-20 + 15
- 5
E) 54 : (-3) x 2 - 9 x (-4)
- 18 x 2 - (-36)
- 36 + 36
0