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Marivali27
a fost răspuns

[12-9:3+(12-9):3]x z+1=41

Răspuns :

[12-9:3+(12-9):3]×z+1=41
(12-3+3:3)×z+1=41
(12-3+1)×z=41-1
10z=40
z=40:10
z=4
[12-3+3:3]x z+1=41
[12-3+1]x z+1=41
12z-3z+z+1=41
10z=41-1
10z=40
z=40/10
z=4

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