from the sum of3x-y+11and-y-11subtract3x-y-11
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3x-y+11+(-y-11)
3x-y+11-y-1 1
-y-y-11+11+3x
-2y+3x
3x-y-11-(-2y+3x)
3x-y-11+2y-3x
3x-3x-y+2y-11
y-11
3x-y+11-y-1 1
-y-y-11+11+3x
-2y+3x
3x-y-11-(-2y+3x)
3x-y-11+2y-3x
3x-3x-y+2y-11
y-11
parneet78:
hlo
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