Question

Rezolvati-mi si explicati-mi va rog. (Ex 10)
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Answer 1

Răspuns:

x+y=67=>x=67-y

(x-10)/y=0,5

x-10=0,5y

67-y-10=0,5y

57=0,5y+y

y=57:1,5

y=38

x=67-38=>x=29

verificare

(29-10)/38=19/38=0,5