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[(3x-2)*5-1]:2+5=7
Va rog!!!!


Răspuns :

[(3x-2)*5-1]:2=7-5
[(3x-2)*5-1]:2=2
[(3x-2)*5-1]=2*2
(3x-2)*5-1 = 4
(3x-2)*5=4+1
3x-2)*5=5
3x-2 = 5 : 5
3x-2 = 1
3x = 1+2
3x = 3
x = 3 : 3
x = 1
[(3x2)x5-1]:2+5=7
[6x5-1]:2+5=7
[30-1]:2+5=7
29:2+5
14r1+5
19r1     este fals