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b)-4x-5
c)-12x-6y
d)x+1
e)-2a-2.5
f)-10
g)-2k-7+6m
h)5x-6
i)-x+3y
j)-9y
a)-7+3y+9+2y
2 + 5y
b)x-3x+2-2x-7
-4x - 5
c)-5x+4y-y-7x-9y
-12x - 6y
d)4x+5-x-4+x-3x
x + 1
e)0,5a-2a+9-0,5a-11,5
-2a -2,5
f)-14k+9k-13+k+3+4k
0k - 10 = -10
g)-3k+2m+5m-7+k-m
-2k + 6m - 7
h)2x-4+3x-2
5x - 6
i)x-3y-2x+6y
-x + 3y
j)2y-5-3y-4-8y+9
-9y