 
 <translate> After painting the red and blue pebbles, Shawn had a remainder of 40 - 9 - 13 = 18 pebbles. He painted 18 / 3 = 6 pebbles yellow. The difference between the number of blue and yellow pebbles is 13 - 6 = 7. Final answer: 7. <ibo> Mgbe o sere okwute ndị ahụ na-acha ọbara ọbara na ndị nke na-acha anụnụ anụnụ, Shawn nwere ihe fọdụrụnụ nke 40 - 9 - 13 = okwute iri na asatọ. O sere 18 / 3 = 6 obere okwute na odo. Ọdịiche dị n'agbata ọnụ ọgụgụ nke okwute na-acha anụnụ anụnụ na nke na-acha odo odo bụ 13 - 6 = 7. Azịza ikpeazụ ya bụ: 7. 