Duive.

1. Eight is added to a number and the sum is doubled, the result is - 11 less than the number. Find

the number

-27

Step-by-step explanation:

Number be x

Eight added to number: x+8

sum is doubled: 2 * (x + 8)

-11 less than number: x - 11

2 * (x + 8) = x - 11

2*x + 2*8 = x - 11

2x + 16 = x - 11

2x - x = - 11 - 16

x = - 27