Addition of Rational Numbers with the Same Sign
To add rational numbers with the same sign, add their absolute values. The sum has the same sign as the addends.
Addition of Rational Numbers with the Different Sign
To add rational numbers with different signs, subtract the lesser absolute value from the greater absolute value. The sum has the same sign as the number with the greater absolute value.
Additive Inverse Property
The sum of a number and its additive inverse of 0. For every number a, a + (-a) = 0. Example: 2 + (-2) = 0.
Subtraction of Rational Numbers
To subtract a rational number, add its additive inverse. For any numbers a and b, a - b = a + (-b). Example: 8 - 15 = 8 + (-15) or -7
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.