Question

X si Y au impreuna 375 lei.

Daca X are de 4 ori mai multi lei decat Y,aflati suma de lei pe care o are fiecare.

Cu Ecuatiie,Va rog.

Answer 1

$x+y=375 \\ x=4y \\ \\ 4y+y=375 \\ 5y=375 \\ y=375:5 \\ y=75 \\ \\ x=4y \\ x=4*75 \\ x=300$

Answer 2

x+y=375
x=4y
4y+y=375
5y=375
y=375:5 (75 lei )
x=4*y =4*75 = 300 lei