?????????????? "ordered paer" ?????????? or iz zat "pare" ????????
line 1: (2/3)x +5y=52 or 2x+5y=156 or y=31.2 -0.4x
line 2: 7x -(8/5)y=47 or 35x -8y=235
line 2...35x -8*(31.2-0.4x)=235
35x +3.2x -249.6 =235
38.2x=235+249.6=484.6
x=484.6/38.2
x=12.685863
y=31.2 -0.4x=31.2-0.4*12.685863 =31.2 -5.0743452
y=26.125655