1) -12 -8 - 7 +9 = -27 + 9 = -18
8+9-11-5= 17-16 = 1
-21-7-15+32= -11
13-2-16-5=-10
-18 + 1 -11 - 10= -38
te pierwsze na minusie oznacza ze masz dlugi , wiec nie mzoesz dlugu odjac dlugu , a nastepnie minus z minusem daje + , stad 9 na plusie :)
a)
(-12)+(-8)-(+7)-(-9)=-12-8-7+9=-18
b)8-(-9)+(-11)-(+5)=8+9-11-5=17-16=1
(-21)+(-7)-(+15)-(-32)=-21-7-15+32=-43+32=-11
-(-13)+(-2)-(+16)+(-5)=13-2-16-5=13-23=-10
b)[(-16)-(-4)]-(-8+6)=-12-(-2)=-10
[-(+11)-(-6)]+(-5+8)=-11+6+3=-2
(-19)-[-(-18)-(+7)]+(-34)=-19-(18-7)-34=-19-11-34=-64
-(+27)-(26-17)+(+14)=-27-9+14=-36+14=-22
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1) -12 -8 - 7 +9 = -27 + 9 = -18
8+9-11-5= 17-16 = 1
-21-7-15+32= -11
13-2-16-5=-10
-18 + 1 -11 - 10= -38
te pierwsze na minusie oznacza ze masz dlugi , wiec nie mzoesz dlugu odjac dlugu , a nastepnie minus z minusem daje + , stad 9 na plusie :)
a)
(-12)+(-8)-(+7)-(-9)=-12-8-7+9=-18
b)8-(-9)+(-11)-(+5)=8+9-11-5=17-16=1
(-21)+(-7)-(+15)-(-32)=-21-7-15+32=-43+32=-11
-(-13)+(-2)-(+16)+(-5)=13-2-16-5=13-23=-10
b)[(-16)-(-4)]-(-8+6)=-12-(-2)=-10
[-(+11)-(-6)]+(-5+8)=-11+6+3=-2
(-19)-[-(-18)-(+7)]+(-34)=-19-(18-7)-34=-19-11-34=-64
-(+27)-(26-17)+(+14)=-27-9+14=-36+14=-22