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Q: Is 18 closer to -2 or -20?

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Negative 2 - negative is 18 integers. Positive 18 to negative is 20 integers.

Niether. It is the median of 18 and 20.

20

2 + 18 = 20

18 + 2 = 20

-2

20, is the sum of 18 and 2.

2 + 18 = 20

18: 1, 2, 3, 6, 9, 18 20: 1, 2, 4, 5, 10, 20

2 - 20 = -18

-2 + (-18) = -20

The GCF is 2.

The GCF is 2.

-18

The factors of 18 are: 1, 2, 3, 6, 9, and 18.The prime factors of 18 are: 2 and 3.The factors of 20 are: 1, 2, 4, 5, 10, and 20.The prime factors of 20 are: 2 and 5.

The common factors of 18 and 20 are 1 and 2.

No. If they are even numbers and not 2, they are not prime. 20 is divisible by 1, 2, 4, 5, 20, and 20. 18 is divisible by 1, 2, 3, 6, 9, and 18.

-18

20

-18

20

-20

Factors of 18: 1, 2, 3, 6, 9, 18Factors of 20: 1, 2, 4, 5, 10, 20GCF (18, 20) = 2

20-18=2

The GCF for 20 30 18 is 2