 
 <translate> Give the step-by-step reasoning process and then the final answer. There are 3 bicycles, 4 tricycles and 7 unicycles in the garage at Zoe's house. Each bicycle has 2 wheels, each tricycle has 3 wheels and each unicycle has 1 wheel. How many wheels are there in all? <hau> Bayyana tsarin tunani mataki-mataki sannan kuma amsar karshe. Akwai kekuna 3, kekuna 4 da kekuna 7 a garejin gidan Zoe. Kowace keke tana da ƙafafun 2, kowane keke yana da ƙafafun 3 kuma kowane unicycle yana da ƙafafun 1. Da yawa kekuna ne a cikin duka? 