math
posted by geo .
Need to find the real number.
Someone performed a trade of 20,000 less than it made, this caused a negative trade balance.
To represent the quanity as a real number when I know that a positive real number names the points to the right of 0 on the number line and negative towards the left of 0.
This question seems to lead me to a negative response. Not knowing the orginal ballance confuses me, proberly when it should not.
I'm lost??
I know that when subtracting real numbers signs change and negative numbers become positive, example: a  b = a + (b)
Therefore, X  20,000 = X + (20,000) =
??????????????
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