Question

Aflați necunoscute 90+[(420÷4+5•c)•2+18]÷4=212​

Answer 1

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=_