Explicație pas cu pas:
A)70-(15+84)=70-99=-29
70-30+15-84=40-69=-29
B) (12+22)+12=34+12=46
25-13+22-18+30=12+22+12=46
C)-100-15-70=-145
-100+25-40-80+75-25=-75-120+50=-195+50=-145
D)25-(-15)+(-93)=25+15-93=-53
43-18-5+20-7+100= 25+15
E)(50-4500)-(5+25)=-4450-30=4480
F) (37-17)+42=20+42=62
76-39-17-5+47=37-22+47=15+47=62
G)(-27-33)-(150-120)-(5+15)=-60-30-20=-110
-100+73-33+50-200+120-34+29-15=
-27+17-80-5-15=-10-100=-110
H)-234+(130-50)-(364-24)=-234+80-340= 314-340=-26
-34-200-13+143-50-17-347+24=
