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30 March, 13:41

The sum of a number and 9 is - 7. What does that mean or what's the equation

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  1. 30 March, 14:59
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    Answer: x+9 = - 7

    Step-by-step explanation:

    What this statement means is that the sum or combining/adding of 9 and another number gives you - 7 as the answer. We can write an equation to figure out what the other number is.

    Let's use x as the unknown/other number.

    x+9 = - 7

    That is what your set up equation would look like. To solve for x, you simply subtract 9 on both sides.

    x=-16
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