(-4) + (-7) - (-5) =
12 - (-6) + (-20) =
(-103) - (-12) - (-57)=
(-3) - (-5) + (-9) - (+4) =
13 - (+15) - (-23) + (-30) =
(-40) + (-35) - (+50) - (-65) =
macie to obliczyć.
i to ma być rozpisane!
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W pierwszej kolejności trzeba opuścić nawiasy.
(-4)+(-7)-(-5)=-4-7+5=-11+5=-6
12-(-6)+(-20)=12+6-20=18-20=-2
(-103)-(-12)-(-57)=-103+12+57=-103+69=-34
(-3)-(-5)+(-9)-(+4)=-3+5-9-4=-16+5=-11
13-(+15)-(-23)+(-30)=13-15+23-30=-45+36=-9
(-40)+(-35)-(+50)-(-65)=-40-35-50+65=-125+65=-60