The sum of (5x - 8y + 5z) and (-3x + 4y) is _____.
A
5x + 12y
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B
-8x + 12y
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C
2x - 4y + 5z
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D
-2x - 4y + 5
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Solution
The correct option is C 2x - 4y + 5z The sum of (5x - 8y + 5z) and (-3x + 4y) is 5x−8y+5z −3x+4y+0z–––––––––––––––––– 2x−4y+5z
Hence, the sum is 2x - 4y + 5z.