Question

What must be added to 6x - 4y + 5z to get 5x + 9y – 3z?​

Answer 1

Answer:

8xyz

Step-by-step explanation:

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Answer 2

Answer:

$6x - 4y + 5z + \: t \: = 5x + 9y – 3z$

$t = 6x - 4y + 5z - 5x + 9y – 3z?$

$t = 6x - 5x - 4y + 9y + 5z - 3z$

$t \: = x + 5y + 2z$

so x + 5y - 2z must be added to 6x - 4y + 5z to get 5x + 9y – 3z.