18 + (-21) =
-56 - 22 =
24 + (-51) =
- 17 + 15 =
- 73 + 17 =
a) = -3b) = -78c) = -27d) = -2e = -56 jeśli mamy znaki + i - razem to zmieniamy na - | + i - = -jeśli mamy - i - dajemy + | - i - = ++ i + = +
18 + (-21) =-3
-56 - 22 =-78
24 + (-51) =-27
- 17 + 15 =-2
- 73 + 17 =-56
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a) = -3
b) = -78
c) = -27
d) = -2
e = -56
jeśli mamy znaki + i - razem to zmieniamy na - | + i - = -
jeśli mamy - i - dajemy + | - i - = +
+ i + = +
18 + (-21) =-3
-56 - 22 =-78
24 + (-51) =-27
- 17 + 15 =-2
- 73 + 17 =-56