(4x+3y-5z)+(-7z +9x5y)+(2y-4×+2z)
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Step-by-step explanation:
4x+3y-5z-7z+45xy+2y-4x+2z
4x-4x+3y+2y-5z-7z+2z+45xy
5y-12z+2z+45xy
5y-10z+45xy
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