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[(a-416:4+2)-5+3]×10=2000

Răspuns :

[(a-416:4+2)-5+3]x10=2000
[(a-104+2)-5+3]=2000:10
(a-104+2)-5+3=200
(a-104+2)-5=200-3
(a-104+2)-5=197
a-104+2=197+5
a-104+2=202
a-104=202-2
a-104=200
a=200+104
a=304