The sum of (5x - 8y + 5z) and (-3x + 4y) is _____.

-2x - 4y + 5

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5x + 12y

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2x - 4y + 5z

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-8x + 12y

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Solution

The correct option is C 2x - 4y + 5z
The sum of (5x - 8y + 5z) and (-3x + 4y) is
$5 x - 8 y + 5 z$
$- 3 x + 4 y + 0 z - ---------------- -$
$2 x - 4 y + 5 z$
Hence, the sum is 2x - 4y + 5z.

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