sum of 3y+4x-5z and -3y+5x-2z.
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ans 9x-7z
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Answer:
( 3y + 4x - 5z ) + ( -3y + 5x - 2z )
= 3y + 4x - 5z - 3y + 5x - 2z
= ( 4x + 5x ) + ( 3y - 3y ) + ( -5z - 2z )
= 9x + 0y + -7z
= 9x - 7z
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