Change each subtraction to addition of the opposite number, and then add.  -8 - (-8) 

5 Answers | Add Yours

justaguide's profile pic

justaguide | College Teacher | (Level 2) Distinguished Educator

Posted on

The result of `-8 - (-8)` has to be determined.

`-8 - (-8)`

= `-8 + -(-8)`

Opening the brackets changes the sign of the term inside

= -8 + 8

= 0

The result of -8 - (-8) = 0

sid-sarfraz's profile pic

sid-sarfraz | Student, Graduate | (Level 2) Salutatorian

Posted on

-8 -(-8)

According to this question, there are negative signs inside and outside brackets. Now according to the rule when a negative sign is multiplied by another negative we get a positive sign.

Like this;

-  x  -   =  +

-  x  +  =  -

+  x  -  =  -

+  x  + =  +

Now as for the problem;

-8 - (-8)

= - 8 + 8

= 0

Hence Solved!

udonbutterfly's profile pic

udonbutterfly | Student, College Freshman | (Level 1) Valedictorian

Posted on

-8 - (-8) 

There is always two ways you can think of this questions

1. Two negatives always make a positive! the negatives here would be the negative outside of the parentheses and the negative inside the parentheses so -8 - (-8) which will turn the equation into -8+8 = 0

2. The second way to think about it would be to add a 1 out side the paranthese and you will get negative one, -1, to multiply by -8 which will  turn the -8 positive which will also give you the equation -8+8=0

rachellopez's profile pic

rachellopez | Student, Grade 12 | (Level 1) Valedictorian

Posted on

If you subtract a negative number, it is the same thing as addition. When you subtract a negative 8 from a negative 8, you are really adding 8 and negative 8. So, -8 + 8 will cancel out, making your answer 0.

We’ve answered 318,926 questions. We can answer yours, too.

Ask a question