Nombres enters-4

a) ( - 12 + 24 - 18 ) : ( - 6 ) =
b) ( - 3 ). ( 6 - 8 + 4 - 3 ) =
c) ( 45 - 18 + 81 ): ( - 9 ) =
d) ( 12 - 7 - 8 + 1 ) . ( - 2 ) =
e) ( - 35 - 42 - 63 ) : ( + 7 ) =
f) ( + 4 ) . ( - 8 + 5 - 6 +2 ) =
g) ( - 72 + 24 - 48 - 12 ) : ( + 12 ) =
h) ( - 6 + 4 - 3 - 5 ) .( - 10 ) =
i) (+34) - ( -25 ) =
j) ( -48) - ( -52) =
k) ( + 75 ) - ( - 39 ) =
l) 256- ( + 256 ) =
m) ( -4 ) - ( + 12 ) =
n) 68- ( 21 - 54 ) + ( 7 - 72 )=
o) ( 24 - 89 + 18 ) + ( - 91 + 24 ) =
p) ( - 417 - 78 ) - ( -518- 287 ) =
q) 14 + [ 23 - ( 34 - 57 ) ] =
r) 14 - [ 23 - ( 34 - 57 ) ] =
s) - 32 - [ 19- ( 24 - 46 ) ] =
t) ( - 3 ) ·( - 6 ) ( + 4 ) =
u) ( -8 ) ( - 3 ) ( - 7 ) =
v) ( - 6 ) · 8 ( - 10 ) =
w) - 14 + 3 · ( - 8 ) =