Wyatt has 10 blue envelopes. He has 4 fewer yellow envelopes than blue envelopes. How many envelopes does Wyatt have in all?
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.
#### 16