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x+1
-2a-2,5
-10
6m-2k-7
5x-6
-x+3y
-9y
4x+5-x-4+x-3x=x+1
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-7+6m
2x-4+3x-2=5x-6
x-3y-2x+6y=-x +3y
2y-5-3y-4-8y+9= -9y