If it's not what You are looking for type in the system of equations solver your own equations and let us solve it.
Remember to put linear equations with variables x and y.
for example:
2x+y=8
x+3y=14
| r+s=94;121r+294s=20266 | | x+y=94;121x+294y=20266 | | x^2+y^2=12;y^2-2x^2=6 | | 9x+2y=-9;x=78-9y | | 3/2x+7/2y=-20;5x+3/4y=-23 | | 3x+y=1;y=1-3x | | 0.2x=0.1y-1.5;2x-y=8 | | 10x+3y=12;5x+8y=32 | | 2x+5y=19;x+4y=-4 | | y=-x+1;x+y=-1/4 | | 1.7x+1.8y=1.2;0.8x+0.3y=3.3 | | 72x-8y=16;y=9x+2 | | x+y=12;y=2x | | 0.05x-0.01y=1;0.27x+0.14y=15.1 | | 20x;10x | | 3x+5;16x | | x-y=1;x+y=7 | | y=3x-6;y-3x=5 | | 2x+6y=2;y=3-3x | | 2x+6y=2;y=3-3y | | x+2y=7;3x-4y=6 | | 7b;4b+12 | | 5x=-2+7y;x-7y=-34 | | x-7y=-20;-3x+9y=36 | | 6x-6y=42;7x+6-68 | | 6x-6y=42;7x+6y-68 | | -6x+3y=-39;-6x-3y=-21 | | -10x-6y=0;-4x-6y=54 | | -2x=2+y;-6x-y=-2 | | x-4y=31;-x+3y=-25 | | -5x-y=-7;-6x+y=7 | | -2x-8y=14;-2x-2y=-26 |