Вы ввели
4*y + 4*x + 3*(2*x + y) = -27/5 3*(x + 2*y) = -33/5
3*(2*x + y) + 4*x + 4*y = -27/5 3*(x + 2*y) = -33/5
$$4 y + 4 x + 3 \left(2 x + y\right) = - \frac{27}{5}$$<br><br>$$3 \left(x + 2 y\right) = - \frac{33}{5}$$