Question

Calcule :
a) (-5+0).(-4-7) =
b) (+7-2). (+1-4) =
c) (0-4).(-2+6) =
d) (+1+4). (-6-7) =
e) (-3+5) . (-4+1) =
f) (-1-6) . (-8-3) =

Answer 1

a)( -5 + 0) . (-4 - 7)
( - 5) . ( -11)
+ 55
b) (+7 - 2) . ( +1 - 4)
(+ 5) . ( - 3)
- 15
c) ( 0 - 4) . ( - 2 + 6)
( - 4) . ( + 4)
- 16
d)( +1 + 4) . ( -6 - 7)
(+ 5) . ( - 13)
- 65
e)( - 3 + 5) .( - 4 + 1)
( +2) . ( - 3)
- 6
f)( - 1 - 6) .( - 8 - 3)
( - 7 ) . ( - 11)
 + 77