5x-[4y-{7x-(3z-2y)+4z-(x+3y-2z)}]
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Step-by-step explanation:
5x -[4y-{7x-3z-2y+4z-x-3y+2z}]
5x -[4y-{6x+3z-5y }]
5x-[4y-6x-3z+5y]
5x-4y+6x+3z-5y
11x-9y +3z
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