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[5.(5.5+5:)-a]:10=3
[606+(128:8-2).x=2006

Răspuns :

Gandac
[5×(5×5+5)-a]÷10=3
[5×(5×5+5)-a]÷10=3
[(5×30)-a]÷10=3 |×10
150-a=30
a=150-30
a=120

606+(128÷8-2)×X=2006
606+(16-2)×X=2006
606+14X=2006
14X=2006-606
14X=1400
X=100