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Q: What is the sum of 8 and 7 doubled?

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24

The sum of 1 and 7 is 8. That is, 1 + 7 = 8

No. The product of 7 and 8 is 7*8

The first integer must equal 77 - 69 = 8 , since doubling it increases the sum by this amount. Similarly, the second integer must = 91 - 69 = 22. Then the third integer is 69 - 22 - 8 = 39.

8 + 7 = 15

15

(7 x 8) + (8 x 8) = 15 x 8 = 120

The sum is: 8

76

It is: 7+8+25 = 40

Numbers that have a product of 8 are 1,8 and 2,4. Their sums are 9 and 6 respectively. Numbers that have a product of 7 and a sum of 8 are 1 and 7.

The sum of -7 and -8 is -15.

-7

The sum of 7 and -8 is -1.

-7

-7

6

It is: 8+1+7 = 16

8

You can find the sum of 8, 5, and 7, and then multiple that sum by 3, which is equal to 60.

2(n+8)

(7 x 8) + (8 x 8) = 15 x 8

13

56

No!

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