What is a "bystander," and why does Holocaust scholar Yehuda Bauer warn against being one?​

The bystander effect is the tendency to not help in a situation where there other people present.

Explanation: in a situation where you see a lady lying helplessly on the road and moaning in pain it will be noticed that people will pass by without seeking help because the expect someone else to the first initiative.

answer; /// i believe the three where,tutankhamun,hatshepsut and , im not sure,but maybe (ramses the great)

simplify brackets

8 - 2a - 7 = a + 40

simplify 8 - 2a - 7 to -2a + 1

-2a + 1 = a + 40

add 2a to both sides

1 = a + 40 + 2a

simplify a + 40 + 2a to 3a + 40

1 = 3a + 40

subtract 40 from both sides

1 - 40 = 3a

simplify 1 - 40 o -39

-39 = 3a

divide both sides by 3

-39/3 = a

simplify 39/3 to 13

-13 = a

switch sides

a = -13