No.
-3 - (-9) = 6
No, the product of two negative numbers is always a positive.
Adding two negative numbers always gives a negative number.
No, the difference of two positive integers cannot always be negative. In fact, the difference will be negative only when the first integer is smaller than the second. If the first integer is greater than or equal to the second, the difference will be zero or positive.
No. Adding two negative numbers will give a number which is more negative.
Yes, the difference between two even numbers is always an even number.
Not necessarily. The difference between a = 7 & b = 7 is 0, and that is not a natural number.
No. You can subtract two whole numbers and get a negative result. Whole numbers can't be negative.
The product of negative number and a positive number is always a negative. The product of two positive numbers, or two negative numbers, is always a positive.
That statement is false. For example, (-2) - (-3) = 1 which is a positive number created from two negative numbers when subtracted.
No, the product of two negative numbers is always a positive.
Adding two negative numbers always gives a negative number.
No.
If difference is taken to mean the first number minus the second then the answer can be positive or negative (or zero if the two numbers are the same). For example: the difference between -5 and -3 is -2 while the difference between -3 and -5 is +2.
No, the difference of two positive integers cannot always be negative. In fact, the difference will be negative only when the first integer is smaller than the second. If the first integer is greater than or equal to the second, the difference will be zero or positive.
No. Adding two negative numbers will give a number which is more negative.
Yes, the difference between two even numbers is always an even number.
No, it is not true.