Oblicz :
a)
(-3)-(-7)=
8-(-4)=
(-10)-8=
7-15=
b)
(-3)-10=
(-12)-(-6)=
(-9)-(-3)=
(-8)-1=
c)
11-(-11)=
(-25)-(-25)=
(-34)-50=
(-42)-40=
d)
(-40)-(-20)=
(-120)-70=
520-(-20)=
(-110)-(-200)=
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a)
(-3)+7=4
8+4=12
-10-8=-18
7-15=-8
b)
-3-10=-13
-12+6=-6
-9+3=-6
-8-1=-9
c)
11+11=22
-25+25=0
-34-50=-84
-42-40=-82
d)
-40+20=-20
-120-70=-190
520+20=540
-110+200=90