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a) - 4 + 9 = 5
b) - 12 + ( - 6 ) = - 18
c) 8 + ( - 9 ) = - 1
d) - 10 + 3 = - 7
e) - 7 + ( - 2 ) = - 9
f) - 8 + 15 = 7
g) 11 + ( - 3 ) = 8
h) - 6 + 15 = 9
Zadanie 2.
a) 25 - 45 = - 20
b) 3 - 28 = - 25
c) - 4 - ( - 9 ) = 5
d) 2 - ( - 7 ) = 9
e) - 128 - 34 = - 162
f) - 3 - ( - 15 ) = 12
g) 40 - 135 = - 95
h) - 29 - ( - 50 ) = 21
i) - 37 - 70 = - 107
j) - 275 - 125 = - 400
a) -4 + 9=5
b) -12 + (-6)=-18
c) 8 + (-9)=-1
d) -10 + 3=-7
e) -7 + (-2)=-9
f) -8 + 15=7
g) 11 + (-3)=8
h) -6 + 15=9
zad.2
a) 25 - 45=-20
b) 3 - 28=-25
c) -4 - (-9)=5
d) 2 - ( -7)=9
e) -128 - 34=-162
f) - 3 - (-15)=12
g) 40 - 135=-95
h) - 29 - (-50)=21
i) - 37 - 70=-107
j) -275 - 125=-400