The answer is -10. I think about negative numbers on a number line with numbers being behind and in front of the zero. To check the answer you can imagine being on -10 and when it says to minus a number you always know that it’s going to go further into the negative. So -10-10 is -20.
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man thats hard i dont even know
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Recycling materials helps decrease the amount of new materials taken from the environment.
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Recycling materials helps decrease the amount of new materials taken from the environment.
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i dont know the answer dud sry
