123 - 345 - 456 = ?

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SCIENCE QUESTION #17162

123 - 345 - 456 = ?

-678

Explanation

Subtraction is often denoted by the symbol "-". It is the second basic mathematical operation of arithmetic, the others being addition, multiplication and division. Subtraction is a mathematical operation that represents the operation of removing objects from a collection. It is anticommutative, meaning that changing the order changes the sign of the answer. It is not associative, meaning that when one subtracts more than two numbers, order in which subtraction is performed matters. Subtraction of 0 does not change a number.

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Answer time 0s (0s). 33% have previously answered correct on this question. The question was created 2014-02-04.

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