Răspuns:
90+[(420÷4+5•c)•2+18]÷4=212
90+[(105+5•c)•2+18]=212÷4=53
90+[(105+5•c)•2+18]=53
[(105+5•c)•3+18]+90
[(105+5•c)•2+18)]=90-53=37
[(105+5•c)•2+18)]=37
[(105+5•c)•2]=37-18=19
[(105+5•c)•2]=19
(105+5•c)=19•2=38
(105+5•c)=38
5•c=105•38=3990
5•c=3990
c=3990÷5
c=798
Explicație pas cu pas:
sper că te-am ajutat!
_=unicornulcucoroana=_
