A GED student asked me why the multiplication of 2 negative numbers = a positive number instead of a negative number. We know the rule is that multiplying 2 numbers of the same sign = a positive and 2 numbers with different signs = a negative. But what is the logic behind the rules?
in Pre-Algebra Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

Look at this:-2*6=-12

Now this:-2*-6=12

you know how negatives are the opposite of positives?

Thats what happens here

in -2*-6, there's 2 negative numbers  which means it's the opposite of opposite which is a positive number
by Level 9 User (42.3k points)

Related questions

2 answers
asked Feb 28, 2013 in Algebra 1 Answers by anonymous | 305 views
2 answers
1 answer
asked Sep 17, 2014 in Pre-Algebra Answers by anonymous | 247 views
1 answer
1 answer
asked Oct 22, 2014 in Pre-Algebra Answers by anonymous | 176 views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
86,303 questions
92,362 answers
23,927 users