its 30 because you add 8 and 7 then add it by itself or multiply it by 2**.**
30
24
58
30
56
68
Its is 7x2+8
What is the sum of 8 and 7 double
24
Find the product of 7 and the sum of 8 and 10
The sum of 1 and 7 is 8. That is, 1 + 7 = 8
8 + 7 = 15
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.
15
The sum is: 8
8
76
It is: 7+8+25 = 40
(7 x 8) + (8 x 8) = 15 x 8 = 120
-7