Quick summary: negative sign replaces addition with subtraction and vice versa. For example, adding a -5 is the same as subtracting +5. When multiplying or dividing signed numbers, remember that two minus signs in multiplication cancel out. If you have two minuses, the result is +, for three minuses the result is - because the first two cancel out and the third one remains.
3 math and algebra calculators
|
11 lessons written by volunteers
|
Ask or see 537 solved problems here
|
Algebra.Com is a people's math website. It relies on people, such
as yourself, who create our content. All solvers and lessons are
submitted by algebra.com's users. They retain copyright to their
content, although they do grant rights to algebra.com.
Creating lessons is easy! Look for other lessons and
click on 'view source'. All you have to really know is mathematics.
| 