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Which expression is equivalent to the given expression?


−(1/2y+1/4)−(1/2y+1/4)


−1/4(1+2y)−1/4(1+2y)


1/4(2y−1) 1/4(2y−1)


−2(1/4y−1/8)−2(1/4y−1/8)


2(1/8−1/4y)