Răspuns:
A)(45+26)-(15+13)=
(71)-(28)
= 43
B)58-(29-6)+42=
58-(23)+42
=77
C)89- (19+22)+42=
89-41+42
=90
D)100- (52+15)-27=
100-67-27
=6
E)(13+22)-(18-12)=
35-6
=29
F)(69-28)+(14-9)=
41+5
=46
G)192-(86+35)+24=
192-121+24
=95
H)398+(138-97)+45=
398+41+45
=484
Explicație pas cu pas:
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