Answer:
10 and 10
Step-by-step explanation:
So for the first one, 1-(-9), the two subtraction signs cancel each other out and are turned into an addition symbol. The new equation would now be the absolute value of 1 + 9. As we know, 1 + 9 is 10, and the absolute value of 10 is 10. <u>The absolute value just means how many spaces the number is away from 0, and it will always be positive.</u>
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For the second one, -9 -1 would equal -10. Even though -10 is negative, the absolute value will always be positive, so<u> the absolute value of the second one is also 10.</u>
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Hope this helps and let me know about any questions!
