anonymous
  • anonymous
Why (-)*(-)=(+).
Mathematics
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this
and thousands of other questions

amistre64
  • amistre64
hmmm....... multiplication is adding really if you add the opposite of 3 that opposite of 5 times we get what?
amistre64
  • amistre64
the opposite of 3; 5 times = -3 -3 -3 -3 -3 = -15 so the opposite of 5 times gets you to 15
amistre64
  • amistre64
-(-3)-(-3)-(-3)-(-3)-(-3) = 15

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

amistre64
  • amistre64
does that make sense?
anonymous
  • anonymous
it takes me to other sense that is (-1)*x=1 then x=(-1)
nowhereman
  • nowhereman
Do you understand / accept (-1)*(1) = -1 ?
anonymous
  • anonymous
yeah
nowhereman
  • nowhereman
So then you get \[0 = 0\cdot 0 = (a-a)\cdot(b-b) = (a+(-a))\cdot(b+(-b))\]so using distributivity\[ = a\cdot b + a\cdot (-b) + (-a)\cdot b + (-a)\cdot(-b) = a\cdot b - a\cdot b - a\cdot b + (-a)\cdot (-b)\]thus altogether \[ 0= (-a)\cdot(-b) - a\cdot b\] and that means nothing else than \[(-a)\cdot(-b) = a\cdot b\]
amistre64
  • amistre64
phhhhbbbtttt!!! how needs proofs ;)
nowhereman
  • nowhereman
hehe, Mathematics needs it, or from a certain point on anything will be arbitrary because you can't tell intuitively what's true and what's false.
nowhereman
  • nowhereman
btw 555 medals, awesome work there :-)

Looking for something else?

Not the answer you are looking for? Search for more explanations.