Why does multiplying two negative numbers equal a positive number?
In: 1210
Negative number are just regular numbers with the minus sign in front. Lets try using a different sign to show a negative number. Lets use @.
1 is positive
@1 is negative
@1+@1=@2
@1-@1=0
@1-@2=1
Multiplication is just addition
3*4= 3+3+3+3 = 12
@3*4= (@3)+(@3)+(@3)+(@3) = @12
@3*-4= (@3)-(@3)-(@3)-(@3) = 12
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