n/-2 -1=9 ?????

Question

N/-2-1=9 ????     

Answer 1

(n/-2) - 1 = 9

 

we'd cross the -1 over the equality sign making it +1

so we'd have,

 

(n/-2) = 9 + 1

 

which gives;

 

(n/-2) = 10

 

open the brackets

 

n/-2 = 10

 

to solve for n, we cross multiply both sides remembering that 10 is the same as 10/1

so we'd have;

 

n * 1 = -2 * 10

 

giving

 

n = -20

Answer 2

Hi Jeannette,

 

(n/-2)-1=9

add +1 to both the sides

 

(n/-2)-1+1=9+1

 

(n/-2)=10

Multiply (-2) on both the sides to solve for n

 

(n/-2)(-2)=10(-2)

 

n=-20

Answer 3

Hi Jeannette;

n/-2 -1=9 ?????

I think this is...

(n/-2)-1=9...Please correct me if I am wrong.

Let's multiply both sides by -2...

-2[(n/-2)-1]=-9(2)

A negative number multiplied by a negative number results in a positive number...

n+2=-18

Let's subtract 2 from both sides...

-2+n+2=-18-2

n=-20

Let's check our results...

(n/-2)-1=9

(-20/-2)-1=9

A negative number divided by a negative number results in a positive number...

10-1=9

9=9