Step-by-step explanation:
rule 01:(addition rule)
if both number contain same sign (like all are positive or negative),
then you have to add the numbers and sign will remain same .
example:(10)
-4 -15 [here both numbers are negtive(same sign),so we have to add ]
= -19
rule 02:(addition rule)
if both number contain different sign , then subtract the smaller absolute value from the larger absolute value. The sign will be the sign of the integer that produced the larger absolute value.
example :(9)
9 - 26 [here subtract 9 from 26 ]
= -17 [as 26 is the larger integer which contains negative sign (-26),
so the sign will negative]
rule 03:(multiplication rule)
negative plus negative = positive [same sign = positive]
neative plus positive =negative [different sign = negative]
example:(22)
-86 -(-19) [negative plus negative = positive]
=-86 + 19 [follow rule 02]
=-67
example:(6)
7 + (-10) [neative plus positive =negative]
=7 - 10 [follow rule 02]
= -3
