Oblicz. A) (-4)+(-7)-(-5)=....................... 12-(-6)+(-20)=....................... (-103)-(-12)-(-57)=....................... B) (-3)-(-5)+(-9)-(+4)=....................... 13-(+15)-(-23)+(-30)=........................ (-40)+(-35)-(+50)-(-65)=............................ Pomozcie... !!
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(-4)+(-7)-(-5)=-4-7+5=-6
12-(-6)+(-20)=12+6-20=-2
(-103)-(-12)-(-57)=-103+12+57=-32
(-3)-(-5)+(-9)-(+4)=-3+5-9-4=-9
13-(+15)-(-23)+(-30)=13-15+23-30=-9
(-40)+(-35)-(+50)-(-65)=-40-35-50+60=-65