{7 - 2x + 3y-(3x - y)} - (2x - 5y + 1
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2
Answer:
9yx-3y²-4x-5y+8
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0
Answer:
{7-2x+3y-3x+y} - 2x+5y-1
7-1-2x-3x-2x+3y+y+5y
6-3x+9y
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