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Remember to put linear equations with variables x and y.
for example:
2x+y=8
x+3y=14
| x+5y=8;x=6-5y | | (5m-2n);(5m+3n) | | x^3-12x^2;48x-68 | | n-4m;m=6n=27 | | z=3;x=3-5z | | q=5p-3;q=p*2+18p+39 | | 5p-5q=-25;8p-7q=-41 | | 3x+2y=-11;7x-3y=28 | | 2x-3y=3;4x-6y=6 | | x+y=16;2x+4y=50 | | 16x+2y=50;16x+4y=50 | | 2x+1y=500;3x+3y=1200 | | 6x+5y=33;5x+6y=33 | | (x+7)/3-1;(x-1)/2 | | 3x-24-6;5x=5-25y | | x+5y=5;2x-5y=1 | | -2x-4y=2;16y-8x-2 | | (4x+11y);(4x+3y+1) | | -7x-9y=-2;-9x-4y=5 | | 9x-2y=20;7x+5y=9 | | -x-3y=-6;x+3y=6 | | x+5y=5;-x-5y=5 | | 0.5x+0.8y=2;1.5x-0.6y=-9 | | 6x+7y=4;6x+9y=12 | | 5x+4=y;y200 | | (2/3x)+(5/4);(11/6x)+(05/3) | | 15x-20y=1;10y=1+15x | | X+3y=6;X+5y=4 | | q=60-4p;p=15-1/4q | | y=10+3z;y=38-4z | | p=6-2q;p=3+q | | 9a+3b=30;8a+4b=24 |