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Remember to put linear equations with variables x and y.
for example:
2x+y=8
x+3y=14
| y=-1/2x-5;6x-2y=24 | | x+y=4;y-x=4 | | 5x=22-y;7x=35+2y | | 3x=12+2y;-6/5x+y=-9/5 | | 3x+2y=0;12x+2=6y | | 2x-5y=-9;5x+2y=50 | | x+y=4;x+y=-2 | | 7x-y=41;x+5y=47 | | 2x-y=7;9y=2x-31 | | x+y=11;6x-y=10 | | 0.1x+0.5y=-0.8;0.8x-0.6y=7.4 | | 1/3x+1/2y=1/6;1/3x+2y=5/3 | | 16x-10y=4;8x=5y+2 | | 15x-20y=7;10y=-3+5x | | x=5y-5;-2x+10y=10 | | 5x-27=-y;4x-y=0 | | 5x-27=-1y;4x-1y=0 | | 4x+5y=3;x=3-2y | | 6x+2y=10;12x+4y=21 | | x+y=5;3x+2y=10 | | -12x+14z=-14;-14x-14z=98 | | a+s=456;350a+100s=113100 | | a+s=456;3.5a+100s=1131 | | 4a+1b=15.5;3a+2b=14.75 | | 8n=-3m+1;8(-2)=-3m+1 | | y-3x=-2;6x-2y=4 | | x+y=20;x-y=4 | | 2x+3y=1;-3x-2y=-1 | | y=3x-6;y=5x-14 | | x+4y=1;5x+4y=-11 | | 2x-2y=-2;y=4x-5 | | 6x+y=-3;5x-3y=-83 |