This is an example of why some questions go unanswered.
The missing information makes it impossible to answer the question.
Before you hit that Submit button, make sure you have not left anything out, or repeated it unnecessarily.
Proofread your dang question!
There are actually two different ways to complete the expressions above with the given numbers so that each expression has the same value.
The value of all four expressions could be
or
.
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