Question

Help imi trebuie urgent​

Answer 1

Răspuns:

a·3+3=30

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

_________

(b+3)·3=30

b+3=30:3

b=10-3

b=7

___________

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

(c-3):3=30-3

c-3=27·3

c=81+3

c=84