Negative term in the front of a multi-term expression.
If a multi-term expression starts with a negative term, then we move the first positive term to the front. It can be done since addition is a commutative operation, that is why the order of the terms can be altered.
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If a multi-term expression starts with a negative term, then we move the first positive term to the front. It can be done since addition is a commutative operation, that is why the order of the terms can be altered.