x-[x-(x+y)-{x-(x-y-x) }+2y
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Step-by-step explanation:
x-[x-(X+Y)-{X-(X-Y-X)}]+2y
=X-[X-(X+y)-{X-(-y)}]+2Y
=x-[x-(X+y)-{x+y}]+2Y
=x-[X-X-y-x-y]+2Y
=x-[-x-2y]+2Y
=x+x+2y+2Y
=2x+4y
=2(x+2Y)
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