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# In integer, when we have the same numbers and different sign then what we can do [+/-]?

__Rules of integers for addition and subtraction __

1) If the two numbers have a different sign like positive and negative then subtract the two numbers and give the sign of the bigger number.

Eg: $17 - 8 = + 9; -12 + 5 = -7$

2) If the two numbers have the same sign i.e. either positive or negative signs then add the two numbers and give the common sign.

Eg: $6 + 9 = 15; -8 - 7 = -15$

**Integer Multiplication**

$ + x + = + Eg: +2 x +3 = +6$

$+ x - = - Eg: +2 x - 3 = - 6$

$- x + = - Eg: - 2 x +3 = - 6$

$- x - = + Eg: -2 x -3 = +6$

**Integer Division**

$ + / + = + Eg: +6 / +3 = +2 $

$+ / - = - Eg: +6 / - 3 = - 2$

$- / + = - Eg: - 6 / +3 = - 2$

$- / - = + Eg: -6 x -3 = + 2$

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