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Afla numarul a care verifica egalitatea [(3a+19):5-2]•11+2=35

Răspuns :

Didi12342
[(3a+19):5-2]•11+2=35
[(3a+19):5-2]•11 = 35 - 2
[(3a+19):5-2]•11 = 33
(3a+19):5-2 = 33 :11
(3a+19):5-2 = 3
(3a+19):5 = 3+2
(3a+19):5 = 5
3a+19 = 5×5
3a+19 = 25
3a = 25-19
3a = 6
a = 6:3
a = 2

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