6y+5y=56
7x+4y=58
si es (6y)+5y=56 y=(56/11) x=(11,19)
si es 6x+5y=56 y=49,9x=-15,09
6y+5y=5611y=56
y=56/11
7x+4y=58x=(58-4y)/7x=(58-4(56/11))/7x=(58-224/11)/7x=(414/11)/7
x=414/77