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Remember to put linear equations with variables x and y.
for example:
2x+y=8
x+3y=14
| x=2+y;3x-7y=10 | | x=8+y;-2x+6y=-20 | | x+4y=1;x-y=1 | | x-2y=-28;x-y=-8 | | x+2y=8;x-y=2 | | x=12+y;18x-12y=18 | | 1/2x+1/5y=-13/10;1/2x+4y=5/2 | | 4x+3y=36;2x-3y=0 | | x+5y=-14;5x-4y=46 | | x+5y=14;5x-4y=46 | | 2x+5y=3;x+10y=9 | | 3x-2y=5;4x-5y=20 | | 18a^2b^9;8a^8b^3 | | (-5d^5e^6)^2;(2d^6e^2)^3 | | -8x+3y=26;5x+9y=49 | | 6y=-50-4x;5y+6x=-49 | | 2x+5y=9;-x+y=2 | | 2x+5y=9;-x+y=2 | | 2y=-x+5;4y=-2x+10 | | x+2y=5;2x+4y=10 | | y=4x-7;3x-2y=4 | | 4x+2y=84;4x+3y=74 | | 2x+7y=-1;4x-3y=-19 | | -3x+y=6;3x-5y=-2 | | 5x+7y=24;x-2y=-2 | | 17w-3u=7;w-5u=-16 | | 250+8x=y;350+7.75x=y | | 9/4x=y+5/2;0=-2x-10+2y | | 4y=-26-11x;6+22y=8x | | 5;3x+8 | | -3x+4y=-12;3x-5y=6 | | 2x+7y=-5;3x-8y=-5 |