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Afla nr. A B C D

A:4=67

B+A=1000

C:1=B

A+B+C+D=2000


Răspuns :

=> a:4=67
a=4×67
a=268

=>b+268=1000
b=1000-268
b=732

=>c:1=732
c=1×732
c=732

=>268+732+732+d=2000
d=2000-(268+732+732)
d=2000-1732
d=268