Question

se da proportia:
$\frac{x}{y}$
=
$\frac{7}{5}$
Aflati numerele x si y stiind ca:
c) 2x+3y=58

Answer 1

x/y=7/5 =>x=7y/5
2(7y/5) + 3y = 58
14y + 15y = 290
29y = 290 =>y=10
x=(7×10)/5 =>x=14