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The "answer" is the number that 'z' must be in order to make the statement true.

Here's a systematic procedure to find out what the number is:

-44 - 9z = -31 - 3z

Add 31 to each side of the equation:

-13 - 9z = -3z

Add 9z to each side:

-13 = 6z

Divide each side by 6 :

-13/6 = z

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13y ago

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