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Help imi trebuie urgent​

Help Imi Trebuie Urgent class=

Răspuns :

Răspuns:

a·3+3=30

3a=30-3=>a=27:3=>a=9

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(b+3)·3=30

b+3=30:3

b=10-3

b=7

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[(c-3):3]+3=30

(c-3):3=30-3

c-3=27·3

c=81+3

c=84