Răspuns:
a=număr necunoscut
a+1867=5050
a=5050-1867
a=3183
16.
a+b+c=?
a=3859, b=a-2950
c=b+606
_______
b=3859-2950
b=909
c=909+606
c=1515
a+b+c=3859+909+1515
=4768+1515
=6283
18. 1341+876+a=5000
876+a=5000-1341
876+a=3659
a=3659-876
a=2783
b+980-4760=3698
b+980=3698+4760
b+980=8458
b=8458-980
b=7478
10000-c+906-2408=4982
10000-c+906=4982+2408
10000-c+906=7390
10000-c=7390-906
10000-c=6484
c=6484+10000
c=16484
19. x+1867=5050
x=5050-1867
x=3183
Sper că te-am ajutat!
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