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0,5a-2a+9-0,5a-11,5=-2a-2,5
-14k+9k-13+k+3+4k=-10
-3k+2m+5m-7+k-m=-2k-6m-7
2x-4+3x-2=5x-6
x-3y-2x+6y=-x+3y
2y-5-3y-4-8y+9=-9y
0,5a-2a+9-0,5a-11,5=-a-2,5
-14k+9k-13+k+3+4k=10
-3k+2m+5m-7+k-m=-3k+6m-7
2x-4+3x-2=5x-6
x-3y-2x+6y=-x+3y
2y-5-3y-4-8y+9=-9y