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Afla numarul necunoscut:
89x105-c=25x14
d-48x16=123x20


Răspuns :

89x105-c=25x14
9345-c=350
9345-350=c
c=8995

d-48x16=123x20
d-768=2460
d=2460+768
d=3228
89x105-c=25x14
9345-c=350
9345-350=c
c=8995

d-48x16=123x20
d-768=2460
d=2460+768
d=3228