2x - (y + {y - (x +2y)}]
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Answer:
x
Step-by-step explanation:
2x-(y+(y-x-2y)) (multiple - in x+2y as - is outside the bracket of x+2y)
2x-(y+(-x-y))
2x-(y-x-y) (+y and -y will become 0)
2x-x = x
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