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Q. Subtraction Involving Negative Numbers?
In order to subtract positive and negative numbers, you need to be aware of the Rule for Subtraction. This rule states that subtraction is the same as adding the opposite. In other words, all subtraction problems can actually be rewritten as addition problems.
Here are most of the cases, and some examples of how the rule is used:
A sell a watch to B at gain of 20% and B sell to C at loss of 10%. if C pays @ 432, how much did A pays for it.
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