Question

Calculati x si y daca$\frac{17x-5y}{3x-5y}$ = 3

Answer 1

17x-5y/3x-5y=3
17x-5y=3(3x-5y)
17x-5y=9x-15y
17x-5y-9x+15y=0
8x-10y=0
dam valori lui y     y=1

8x-10=0
8x=-10
x=-10/8          nu sunt sigura