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Afla numărul necunoscut
C:5=506rest2
80:d=8rest 8


Răspuns :

c=506x5+2=2532

d=80:8+8=18
c:5=506 rest2
c=506x5+2
c=2530+2
c=2532
80:d=8rest 8
d=80:8+8
d=10+8
d=18