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Aflati valoarea numarului natural x ,[(X•48):4+1]•5+15=500

Răspuns :

Danait
[(X•48):4+1]•5+15=500
[(X•48):4+1]•5=500-15
[(X•48):4+1]•5=485
[(X•48):4+1]=485:5
(X•48):4+1=97
(X•48):4=97-1
(X•48):4=96
X•48=96•4
X•48=384
X=384:48
X=8
[(Xx48):4+1]x5+15=500
[(Xx48):4+1]x5=500-15=485
(Xx48):4+1=485:5=97
(Xx48):4=97+1=96
Xx48=96x4=392
Xx48=384
x=384:48
x=8

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