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The factors of 4: 1, 2, 4
The factors of 12: 1, 2, 3, 4, 6, 12
Common factors of 4 and 12 are: 1, 2, and 4.
The factors of 8 are 1, 2, 4, and 8. The factors that add up to 10 are 2 and 8.
They are: 1+3+4 = 8 or 4+4 = 8
To find the common factors of 8 and 12, we first list the factors of each number. The factors of 8 are 1, 2, 4, and 8, while the factors of 12 are 1, 2, 3, 4, 6, and 12. The common factors are 1, 2, and 4. To find the sum of these common factors, we add them together: 1 + 2 + 4 = 7. So, the sum of all the common factors of 8 and 12 is 7.
The factor pairs of 80 are (80,1)(40,2)(20,4)(16,5)(10,8) None of them add up to -12.
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