Final answer:
The expression -2a + b could have many results depending on the given values of 'a' and 'b'. The options provided (-2, -3, 2, 3) are possible outcomes, but the question lacks enough information for a conclusive solution.
Step-by-step explanation:
The given expression is -2a + b. Without specific values for 'a' and 'b', we cannot solve this expression. However, the question provides four potential results (-2, -3, 2, 3). These numbers are possible results for the expression under certain conditions. For example, if 'a' were 1 and 'b' were 2, the result of -2a + b would be 0, which is not among the options provided.
The question appears to be incomplete as it lacks crucial information for a conclusive solution.
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