Wyatt has 10 - 4 = <<10-4=6>>6 yellow envelopes.

The total number of envelopes he has is 10 blue + 6 yellow = <<10+6=16>>16 envelopes.

# Answer

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Question:
Wyatt has 10 blue envelopes. He has 4 fewer yellow envelopes than blue envelopes. How many envelopes does Wyatt have in all?
Answer:
Let's think step by step.

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Wyatt has 10 blue envelopes. He has 4 fewer yellow envelopes than blue envelopes. How many envelopes does Wyatt have in all?
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