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Efectuati:
a)785+205-18*9+(803-66+9*10)=
b)63450:45+104:2+85*10=
c){123*35+10*[47+10*(407+2405:65)]-2785}+1000


Răspuns :

a)785+205-18*9+(803-66+9*10)=
980-162+(803-66+90)=
818+827=1645

b)63450:45+104:2+85*10=
1410+51+850=
1461+850=2311

c){123*35+10*[47+10*(407+2405:65)]-2785}+1000=
{4305+10*[47+10*(407+37)]-2785}+1000=
[4305+10*(47+10*444)-2785]+1000=
[4305+10*(47+4440)-2785]+1000=
(4305+10*4487-2785)+1000=
(4305+44870-2785)+1000=
(4305+44870-2785)+1000=
49175-2785+1000=
46390+1000=
47390