cineva ma poate ajuta aici va rog?
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Răspuns:
[26+(x-7)*12]:2=49 (x-7)*12=26-24 x-7=10
[26+(x-7*12]=49:2. ( x-7)*12=2. x=10-7
[26+(x-7*12]=24. x-7=12-2. x=3
Răspuns:
[26+(x-7)×12]:2=49
[26+(x-7)×12]=49×2
[26+(x-7)×12]=98
(x-7)×12=98-26
(x-7)×12=72
x-7=72:12
x-7=6
x=7+6
x=13