Ответ:\(6x+12=48\)\(6x=36\)\(x=6\)\(4y-9=19\)\(4y=28\)\(y=7\)\(7x-14=35\)\(7x=49\)\(x=7\)\(9y+6=60\)\(9y=54\)\(y=6\)Ответ: x = 6; y = 7; x = 7; y = 6.