Change each subtraction to addition of the opposite number, and then add. -8 - (-8)
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
The result of -8 - (-8) = 0
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.
- x - = +
- x + = -
+ x - = -
+ x + = +
Now as for the problem;
-8 - (-8)
= - 8 + 8
-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
Numbers of same values but different signs when added/subtracted is always equal to zero.
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.