3y+5x=29
y+7x=31
x=-0.6y+5.8
y+7*(-0.6y+5.8)=31
y-4.2y+40.6-31=0
-3.2y+9.6=0
y=9.6/3.2
y=3
3*3+5x=29
-20+5x=0
x=20/5
x=4
3y+5x=29
y+7x=31
3y+5x=29
x=-0.6y+5.8
y+7x=31
y+7*(-0.6y+5.8)=31
y-4.2y+40.6-31=0
-3.2y+9.6=0
y=9.6/3.2
y=3
3y+5x=29
3*3+5x=29
-20+5x=0
x=20/5
x=4