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9 + (-5) - 5
9 - 5 - 5
-1
b)-13 + (-5 - 7 - 9) + (-12)
-13 + (-21) + (-12)
-13 - 21 - 12
-46
c)18 - (-8 - 3) + 22
18 -(-11) + 22
18 + 11 + 22
51
d)-26 + (-8 - 4 + 2) - (-5)
-26 + (-10) - (-5)
-26 - 10 + 5
-31
e) 32 - (-14 + 7 - 4) - (+4)
32 - (-11) - (4)
32 + 11 - 4
39
f) -7 - (23 + 13 -24) - 1
-7 - (12) - 1
-7 - 12 - 1
-20