Question

imi puteti spune va rog cum se face?

Answer 1

Răspuns:

Răspuns corect A. -7/13

Explicație pas cu pas:

$\frac{3x+y}{2} = \frac{x-y}{5}\\\\(3x+y)*5=(x-y)*2\\\\15x+5y=2x-2y\\\\15x-2x=-2y-5y\\\\13x=-7y\\\\x=\frac{-7y}{13}\\\\\frac{x}{y} =\frac{-7}{13}$