Wykonaj obliczenia:
-5 + 7 =
-5 + ( -9 ) =
28 - 17 =
-17 + 23 + (- 3 ) =
(- 7 ) * (- 7) =
( -4 ) * ( -8 ) =
15 : (-3 ) =
(-1) * 3 * (-2 ) =
( -56 ) : ( -8) =
( -90 ) : 5 =
( -6 ) : 2 =
7 * ( -3 ) =