 
 <translate> During dinner time, Yves and his siblings ate 16 / 4 = 4 slices. So the next day, there were still 16 - 4 = 12 slices left. The next day, Yves ate 12 / 4 = 3 slices of pizza. Thus, there were 12 - 3 = 9 slices left. Then, his two siblings ate 2 x 2 = 4 slices of pizza. Therefore, there were still 9 - 4 = 5 slices of pizza left. The final answer: 5. <ibo> N'oge nri abalị, Yves na ụmụnne ya riri 16 / 4 = 4 iberibe. N'echi ya, a ka nwere 16 - 4 = 12 iberibe. N'echi ya, Yves riri 12 / 4 = 3 iberibe pizza. N'ihi ya, e nwere 12 - 3 = 9 iberibe nri fọdụrụ. Mgbe ahụ, ụmụnne ya ndị nwoke abụọ riri 2 x 2 = 4 iberibe pizza. N'ihi ya, a ka nwere 9 - 4 = 5 iberibe pizza fọdụrụ. Azịza ikpeazụ ya bụ: 5. 