1. Solve the simultaneous equation x+2y=1 and x^2+4y^2=13
2. Solve the simultaneous equation 2x+3y=1 and y/x+4x/y=-6
3. Solve the simultaneous equation x-y=6 and y=x^2-7x+10
4. Solve the simultaneous equation 3x+y=3 and 2/3x+1/y=2
5. Solve the simultaneous equation 3x+y+7=3x^2+x-2y=4
6. Solve the simultaneous equation x/2-y/3+1=0 and 2/x+3/y-5/6=0
