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Rezolvati urmatorul exercitiu cu necunoscuta:
2+2x[2+2x(2-2:a)]=10
,,a'' trebuie sa fie 2.
DAU CORONITA!!!


Răspuns :

2+2x[2+2x(2-2:a)]=10
2x[2+2x(2-2:a)]=10-2
2x[2+2x(2-2:a)]=8
[2+2x(2-2:a)]=8:2
2+2x(2-2:a)=4
2x(2-2:a)=4-2
2x(2-2:a)=2
(2-2:a)=2:2
2-2:a=1
2:a=2-1
2:a=1
a=2